What am i doing wrong I am crashing after splitting mod to 2 parts core and mod

[thecow275]

so i have split my mod to make my coremod and the "electrica" separate parts to make an api but iam getting an error that i cant understand at all i have tried editing the main classes of both but with no luck at all here is the error

---- Minecraft Crash Report ----
// I just don't know what went wrong 

Time: 31.7.2016 21:15
Description: Initializing game

java.lang.IllegalArgumentException: Can not set static com.thecow275.electrica.Main field com.thecow275.electrica.Main.instance to com.thecow275.thecowcore.Main
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:167)
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:171)
at sun.reflect.UnsafeStaticObjectFieldAccessorImpl.set(UnsafeStaticObjectFieldAccessorImpl.java:79)
at java.lang.reflect.Field.set(Field.java:764)
at net.minecraftforge.fml.common.FMLModContainer.parseSimpleFieldAnnotation(FMLModContainer.java:467)
at net.minecraftforge.fml.common.FMLModContainer.processFieldAnnotations(FMLModContainer.java:398)
at net.minecraftforge.fml.common.FMLModContainer.constructMod(FMLModContainer.java:558)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:235)
at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:213)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:142)
at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:531)
at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:216)
at net.minecraft.client.Minecraft.startGame(Minecraft.java:439)
at net.minecraft.client.Minecraft.run(Minecraft.java:351)
at net.minecraft.client.main.Main.main(SourceFile:124)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97)
at GradleStart.main(GradleStart.java:26)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Thread: Client thread
Stacktrace:
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:167)
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:171)
at sun.reflect.UnsafeStaticObjectFieldAccessorImpl.set(UnsafeStaticObjectFieldAccessorImpl.java:79)
at java.lang.reflect.Field.set(Field.java:764)
at net.minecraftforge.fml.common.FMLModContainer.parseSimpleFieldAnnotation(FMLModContainer.java:467)
at net.minecraftforge.fml.common.FMLModContainer.processFieldAnnotations(FMLModContainer.java:398)
at net.minecraftforge.fml.common.FMLModContainer.constructMod(FMLModContainer.java:558)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:235)
at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:213)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:142)
at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:531)
at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:216)
at net.minecraft.client.Minecraft.startGame(Minecraft.java:439)

-- Initialization --
Details:
Stacktrace:
at net.minecraft.client.Minecraft.run(Minecraft.java:351)
at net.minecraft.client.main.Main.main(SourceFile:124)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97)
at GradleStart.main(GradleStart.java:26)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)

-- System Details --
Details:
Minecraft Version: 1.10.2
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_101, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 194894456 bytes (185 MB) / 664797184 bytes (634 MB) up to 1905262592 bytes (1817 MB)
JVM Flags: 0 total; 
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP 9.32 Powered by Forge 12.18.1.2011 5 mods loaded, 5 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UC	mcp{9.19} [Minecraft Coder Pack] (minecraft.jar) 
UC	FML{8.0.99.99} [Forge Mod Loader] (forgeBin-1.10.2-12.18.1.2011.jar) 
UC	Forge{12.18.1.2011} [Minecraft Forge] (forgeBin-1.10.2-12.18.1.2011.jar) 
UE	electrica{Beta 0.1.0a} [Thecow275's Electrica] (1-10-2-thecowcoredevelopment) 
UE	thecowcore{Beta 0.1.1a} [thecow275's Coremod] (1-10-2-thecowcoredevelopment) 
Loaded coremods (and transformers):

and here the same stuff copied from idea run tab

[21:15:43] [Client thread/INFO]: [net.minecraftforge.fml.client.SplashProgress:start:219]: ---- Minecraft Crash Report ----
// My bad.

Time: 31.7.2016 21:15
Description: Loading screen debug info

This is just a prompt for computer specs to be printed. THIS IS NOT A ERROR


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- System Details --
Details:
Minecraft Version: 1.10.2
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_101, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 452983248 bytes (431 MB) / 616562688 bytes (588 MB) up to 1905262592 bytes (1817 MB)
JVM Flags: 0 total; 
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: 
Loaded coremods (and transformers): 
GL info: ' Vendor: 'ATI Technologies Inc.' Version: '4.5.13440 Compatibility Profile Context 16.200.1035.0' Renderer: 'AMD Radeon R9 200 Series'
[21:15:43] [Client thread/INFO]: MinecraftForge v12.18.1.2011 Initialized
[21:15:43] [Client thread/INFO]: Replaced 233 ore recipes
[21:15:44] [Client thread/INFO]: Found 0 mods from the command line. Injecting into mod discoverer
[21:15:44] [Client thread/INFO]: Searching E:\Modiprojektit\1-10-2-thecowcoredevelopment\run\mods for mods
[21:15:47] [Client thread/INFO]: Forge Mod Loader has identified 5 mods to load
[21:15:47] [Client thread/INFO]: FML has found a non-mod file industrialcraft-2-2.6.24-ex110-api.jar in your mods directory. It will now be injected into your classpath. This could severe stability issues, it should be removed if possible.
[21:15:47] [Client thread/INFO]: Attempting connection with missing mods [mcp, FML, Forge, electrica, thecowcore] at CLIENT
[21:15:47] [Client thread/INFO]: Attempting connection with missing mods [mcp, FML, Forge, electrica, thecowcore] at SERVER
[21:15:48] [Client thread/ERROR]: Fatal errors were detected during the transition from CONSTRUCTING to PREINITIALIZATION. Loading cannot continue
[21:15:48] [Client thread/ERROR]: 
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UC	mcp{9.19} [Minecraft Coder Pack] (minecraft.jar) 
UC	FML{8.0.99.99} [Forge Mod Loader] (forgeBin-1.10.2-12.18.1.2011.jar) 
UC	Forge{12.18.1.2011} [Minecraft Forge] (forgeBin-1.10.2-12.18.1.2011.jar) 
UE	electrica{Beta 0.1.0a} [Thecow275's Electrica] (1-10-2-thecowcoredevelopment) 
UE	thecowcore{Beta 0.1.1a} [thecow275's Coremod] (1-10-2-thecowcoredevelopment) 
[21:15:48] [Client thread/ERROR]: The following problems were captured during this phase
[21:15:48] [Client thread/ERROR]: Caught exception from thecowcore
java.lang.IllegalArgumentException: Can not set static com.thecow275.electrica.Main field com.thecow275.electrica.Main.instance to com.thecow275.thecowcore.Main
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:167) ~[?:1.8.0_101]
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:171) ~[?:1.8.0_101]
at sun.reflect.UnsafeStaticObjectFieldAccessorImpl.set(UnsafeStaticObjectFieldAccessorImpl.java:79) ~[?:1.8.0_101]
at java.lang.reflect.Field.set(Field.java:764) ~[?:1.8.0_101]
at net.minecraftforge.fml.common.FMLModContainer.parseSimpleFieldAnnotation(FMLModContainer.java:467) ~[forgeBin-1.10.2-12.18.1.2011.jar:?]
at net.minecraftforge.fml.common.FMLModContainer.processFieldAnnotations(FMLModContainer.java:398) ~[forgeBin-1.10.2-12.18.1.2011.jar:?]
at net.minecraftforge.fml.common.FMLModContainer.constructMod(FMLModContainer.java:558) ~[forgeBin-1.10.2-12.18.1.2011.jar:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_101]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_101]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_101]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_101]
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74) ~[guava-17.0.jar:?]
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47) ~[guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322) ~[guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304) ~[guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.post(EventBus.java:275) ~[guava-17.0.jar:?]
at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:235) ~[forgeBin-1.10.2-12.18.1.2011.jar:?]
at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:213) ~[forgeBin-1.10.2-12.18.1.2011.jar:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_101]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_101]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_101]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_101]
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74) ~[guava-17.0.jar:?]
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47) ~[guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322) ~[guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304) ~[guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.post(EventBus.java:275) ~[guava-17.0.jar:?]
at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:142) [LoadController.class:?]
at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:531) [Loader.class:?]
at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:216) [FMLClientHandler.class:?]
at net.minecraft.client.Minecraft.startGame(Minecraft.java:439) [Minecraft.class:?]
at net.minecraft.client.Minecraft.run(Minecraft.java:351) [Minecraft.class:?]
at net.minecraft.client.main.Main.main(SourceFile:124) [Main.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_101]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_101]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_101]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_101]
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.12.jar:?]
at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_101]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_101]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_101]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_101]
at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97) [start/:?]
at GradleStart.main(GradleStart.java:26) [start/:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_101]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_101]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_101]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_101]
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147) [idea_rt.jar:?]
[21:15:48] [Client thread/ERROR]: Caught exception from electrica
java.lang.IllegalArgumentException: Can not set static com.thecow275.thecowcore.Main field com.thecow275.thecowcore.Main.instance to com.thecow275.electrica.Main
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:167) ~[?:1.8.0_101]
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:171) ~[?:1.8.0_101]
at sun.reflect.UnsafeStaticObjectFieldAccessorImpl.set(UnsafeStaticObjectFieldAccessorImpl.java:79) ~[?:1.8.0_101]
at java.lang.reflect.Field.set(Field.java:764) ~[?:1.8.0_101]
at net.minecraftforge.fml.common.FMLModContainer.parseSimpleFieldAnnotation(FMLModContainer.java:467) ~[forgeBin-1.10.2-12.18.1.2011.jar:?]
at net.minecraftforge.fml.common.FMLModContainer.processFieldAnnotations(FMLModContainer.java:398) ~[forgeBin-1.10.2-12.18.1.2011.jar:?]
at net.minecraftforge.fml.common.FMLModContainer.constructMod(FMLModContainer.java:558) ~[forgeBin-1.10.2-12.18.1.2011.jar:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_101]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_101]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_101]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_101]
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74) ~[guava-17.0.jar:?]
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47) ~[guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322) ~[guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304) ~[guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.post(EventBus.java:275) ~[guava-17.0.jar:?]
at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:235) ~[forgeBin-1.10.2-12.18.1.2011.jar:?]
at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:213) ~[forgeBin-1.10.2-12.18.1.2011.jar:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_101]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_101]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_101]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_101]
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74) ~[guava-17.0.jar:?]
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47) ~[guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322) ~[guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304) ~[guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.post(EventBus.java:275) ~[guava-17.0.jar:?]
at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:142) [LoadController.class:?]
at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:531) [Loader.class:?]
at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:216) [FMLClientHandler.class:?]
at net.minecraft.client.Minecraft.startGame(Minecraft.java:439) [Minecraft.class:?]
at net.minecraft.client.Minecraft.run(Minecraft.java:351) [Minecraft.class:?]
at net.minecraft.client.main.Main.main(SourceFile:124) [Main.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_101]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_101]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_101]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_101]
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.12.jar:?]
at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_101]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_101]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_101]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_101]
at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97) [start/:?]
at GradleStart.main(GradleStart.java:26) [start/:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_101]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_101]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_101]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_101]
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147) [idea_rt.jar:?]
[21:15:48] [Client thread/INFO]: Reloading ResourceManager: Default, FMLFileResourcePack:Forge Mod Loader, FMLFileResourcePack:Minecraft Forge, FMLFileResourcePack:Thecow275's Electrica, FMLFileResourcePack:thecow275's Coremod
[21:15:48] [Client thread/INFO]: [net.minecraft.init.Bootstrap:printToSYSOUT:560]: ---- Minecraft Crash Report ----
// Oops.

Time: 31.7.2016 21:15
Description: Initializing game

java.lang.IllegalArgumentException: Can not set static com.thecow275.electrica.Main field com.thecow275.electrica.Main.instance to com.thecow275.thecowcore.Main
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:167)
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:171)
at sun.reflect.UnsafeStaticObjectFieldAccessorImpl.set(UnsafeStaticObjectFieldAccessorImpl.java:79)
at java.lang.reflect.Field.set(Field.java:764)
at net.minecraftforge.fml.common.FMLModContainer.parseSimpleFieldAnnotation(FMLModContainer.java:467)
at net.minecraftforge.fml.common.FMLModContainer.processFieldAnnotations(FMLModContainer.java:398)
at net.minecraftforge.fml.common.FMLModContainer.constructMod(FMLModContainer.java:558)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:235)
at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:213)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:142)
at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:531)
at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:216)
at net.minecraft.client.Minecraft.startGame(Minecraft.java:439)
at net.minecraft.client.Minecraft.run(Minecraft.java:351)
at net.minecraft.client.main.Main.main(SourceFile:124)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97)
at GradleStart.main(GradleStart.java:26)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Thread: Client thread
Stacktrace:
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:167)
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:171)
at sun.reflect.UnsafeStaticObjectFieldAccessorImpl.set(UnsafeStaticObjectFieldAccessorImpl.java:79)
at java.lang.reflect.Field.set(Field.java:764)
at net.minecraftforge.fml.common.FMLModContainer.parseSimpleFieldAnnotation(FMLModContainer.java:467)
at net.minecraftforge.fml.common.FMLModContainer.processFieldAnnotations(FMLModContainer.java:398)
at net.minecraftforge.fml.common.FMLModContainer.constructMod(FMLModContainer.java:558)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:235)
at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:213)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:142)
at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:531)
at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:216)
at net.minecraft.client.Minecraft.startGame(Minecraft.java:439)

-- Initialization --
Details:
Stacktrace:
at net.minecraft.client.Minecraft.run(Minecraft.java:351)
at net.minecraft.client.main.Main.main(SourceFile:124)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97)
at GradleStart.main(GradleStart.java:26)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)

-- System Details --
Details:
Minecraft Version: 1.10.2
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_101, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 194894456 bytes (185 MB) / 664797184 bytes (634 MB) up to 1905262592 bytes (1817 MB)
JVM Flags: 0 total; 
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP 9.32 Powered by Forge 12.18.1.2011 5 mods loaded, 5 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UC	mcp{9.19} [Minecraft Coder Pack] (minecraft.jar) 
UC	FML{8.0.99.99} [Forge Mod Loader] (forgeBin-1.10.2-12.18.1.2011.jar) 
UC	Forge{12.18.1.2011} [Minecraft Forge] (forgeBin-1.10.2-12.18.1.2011.jar) 
UE	electrica{Beta 0.1.0a} [Thecow275's Electrica] (1-10-2-thecowcoredevelopment) 
UE	thecowcore{Beta 0.1.1a} [thecow275's Coremod] (1-10-2-thecowcoredevelopment) 
Loaded coremods (and transformers): 
GL info: ' Vendor: 'ATI Technologies Inc.' Version: '4.5.13440 Compatibility Profile Context 16.200.1035.0' Renderer: 'AMD Radeon R9 200 Series'
Launched Version: 1.10.2
LWJGL: 2.9.4
OpenGL: AMD Radeon R9 200 Series GL version 4.5.13440 Compatibility Profile Context 16.200.1035.0, ATI Technologies Inc.
GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

Using VBOs: Yes
Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Packs: 
Current Language: English (US)
Profiler Position: N/A (disabled)
CPU: 6x AMD FX(tm)-6100 Six-Core Processor 
[21:15:48] [Client thread/INFO]: [net.minecraft.init.Bootstrap:printToSYSOUT:560]: #@!@# Game crashed! Crash report saved to: #@!@# E:\Modiprojektit\1-10-2-thecowcoredevelopment\run\.\crash-reports\crash-2016-07-31_21.15.48-client.txt

Process finished with exit code -1

so what the heck is going on all i can understand is java.lang.IllegalArgumentException: Can not set static com.thecow275.electrica.Main field com.thecow275.electrica.Main.instance to com.thecow275.thecowcore.Main but what does this mean here both of the main classes

 

 

Electrica

package com.thecow275.electrica;

import  net.minecraftforge.fml.common.Mod;
import  net.minecraftforge.fml.common.Mod.EventHandler;
import  net.minecraftforge.fml.common.Mod.Instance;
import	net.minecraftforge.fml.common.SidedProxy;
import	net.minecraftforge.fml.common.event.FMLInitializationEvent;
import	net.minecraftforge.fml.common.event.FMLPostInitializationEvent;
import	net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
@Mod(modid = Main.MODIDELEC, name = Main.MODNAMEELEC, version = Main.VERSIONELEC, updateJSON = "https://raw.githubusercontent.com/thecow275/OpenElectrica/master/update.json")
public class Main {

public static final String MODIDELEC = "electrica";
public static final String MODNAMEELEC = "thecow275's Electrica";
public static final String VERSIONELEC = "Beta 0.1.0a";
@SidedProxy(clientSide="com.thecow275.electrica.ClientProxy",
		serverSide="com.thecow275.electrica.ServerProxy")
public static CommonProxy proxy;
@Instance
public static Main instance = new Main();

@EventHandler
public void preInit(FMLPreInitializationEvent e){
	proxy.preInit(e);
}
@EventHandler
public void Init(FMLInitializationEvent e){
	proxy.Init(e);
}
@EventHandler
public void postInit(FMLPostInitializationEvent e){
	proxy.postInit(e);
}



}

 

ThecowCore

package com.thecow275.thecowcore;

import net.minecraftforge.fml.common.Mod;
import net.minecraftforge.fml.common.Mod.EventHandler;
import net.minecraftforge.fml.common.Mod.Instance;
import net.minecraftforge.fml.common.SidedProxy;
import net.minecraftforge.fml.common.event.FMLInitializationEvent;
import net.minecraftforge.fml.common.event.FMLPostInitializationEvent;
import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;

@Mod(modid = Main.MODIDCOWCORE2, name = Main.MODNAMECOWCORE2, version = Main.VERSIONCOWCORE2, updateJSON = "https://raw.githubusercontent.com/thecow275/OpenElectrica/master/update.json")
public class Main {

public static final String MODIDCOWCORE2 = "thecowcore";
public static final String MODNAMECOWCORE2 = "thecow275's Coremod";
public static final String VERSIONCOWCORE2 = "Beta 0.1.1a";
@SidedProxy(clientSide="com.thecow275.thecowcore.ClientProxy",
		serverSide="com.thecow275.thecowcore.ServerProxy")
public static CommonProxy proxy;
@Instance
public static Main instance = new Main();

@EventHandler
public void preInit(FMLPreInitializationEvent e){
	proxy.preInit(e);
}
@EventHandler
public void Init(FMLInitializationEvent e){
	proxy.Init(e);
}
@EventHandler
public void postInit(FMLPostInitializationEvent e){
	proxy.postInit(e);
}



}

how is it that i feel like I am dumb and dont know what i broke

[gurujive]

I personally hate core mods, and the only one I will download period is mantle, which is required by tinkers constuct, (which I hate to do).

 

But, grim3212 has taken all his old mods and put them into one, core + book + mods.

 

Which has an open source and can be found here:

 

https://github.com/grim3212/Grim-Pack

[thecow275]

the reason i am splitting my mod into 2 parts so that if someone wants only the core functionality like the power api and item block creation api without it being so heavy some older computers cant run it also if they only want the basic compatibility between IC2 and lets say some new mod using my mods power api without my mod as it being too heavy in the future so they would only take ThecowCore and leave electrica and plantic (upcoming) out to keep it less heavy and bam they would have electricity API converter and the Block/Item Creation Kit Api for use to be used by other mods perhaps their new mod they just made using ThecowCore BICK API (Block/Item Creation Kit API) and ThecowCore power API

[LexManos]

Core mods are a very specific thing in the MC world.

You will not get help making a Core mod here. Because editing vanilla classes is BAD and you shouldn't use it.

If you are making a Library, or a 'base' version of your mod DO NOT call it a 'Core' mod.

 

 

Beyond that there is no real reason to split the two into two physical parts.

Just have a config option to enable/disable certian parts.

[Draco18s]

Your problem lies in the fact that your main mod class names are the same and the @Instance annotation is not supplied with a string value of the mod ID:

 

	@Instance
public static Main instance = new Main();

 

	@Instance
public static Main instance = new Main();

 

Forge doesn't know which one of these is which. Use

@Instance(value = MODIDELEC)

and

@Instance(value = MODIDCOWCORE2)

 

By the way do not instantiate your own main class: that's what the @Instance annotation is for.

[thecow275]

part of my mistake calling it a Coremod what i meant is that it is a API/Library and a mod using it sorry about that

 

Draco18s that fixed it thanks i didnt know that if the mods have the same com.mainmodclassname.modpart it would need that value as example because my mods start with com.thecow275 it causes this issue if there is no value in the @Instance in this case the String MODIDCOWCORE2 and on the other the String MODIDELEC is reguired so i wouldnt need this fix if it would be for example com.thecow275.electrica and com.thecow.thecowcore then this fix and that string wouldnt be reguired in the @Instance part