[1.7.10] AbstractMethodException while registering new commands (using ant)

[tills13]

I'm writing a mod for 1.7.10. I'm trying to register a new command to interact with my mod. If I compile it via gradle, it works. However, I'm trying to compile it via Apache Ant. I extracted the *.class files from the gradle cache, and put them in my java ClassPath. When I compile, it compiles fine, but when Forge tries to load my mod, I get the following exception:

 

[23:31:20] [server thread/ERROR] [FML]: Caught exception from ForgeHome
java.lang.AbstractMethodError
at net.minecraft.command.CommandHandler.func_71560_a(CommandHandler.java:137) ~[z.class:?]
at cpw.mods.fml.common.event.FMLServerStartingEvent.registerServerCommand(FMLServerStartingEvent.java:44) ~[FMLServerStartingEvent.class:?]
at ca.sbstn.minecraft.forgehome.ForgeHome.init(Unknown Source) ~[ForgeHome.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_20-ea]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_20-ea]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_20-ea]
at java.lang.reflect.Method.invoke(Method.java:483) ~[?:1.8.0_20-ea]
at cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:532) ~[FMLModContainer.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_20-ea]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_20-ea]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_20-ea]
at java.lang.reflect.Method.invoke(Method.java:483) ~[?:1.8.0_20-ea]
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 cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:212) ~[LoadController.class:?]
at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:190) ~[LoadController.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_20-ea]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_20-ea]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_20-ea]
at java.lang.reflect.Method.invoke(Method.java:483) ~[?:1.8.0_20-ea]
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 cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:119) [LoadController.class:?]
at cpw.mods.fml.common.Loader.serverStarting(Loader.java:789) [Loader.class:?]
at cpw.mods.fml.common.FMLCommonHandler.handleServerStarting(FMLCommonHandler.java:278) [FMLCommonHandler.class:?]
at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:277) [lt.class:?]
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:387) [MinecraftServer.class:?]
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685) [li.class:?]
[23:31:20] [server thread/ERROR] [FML]: A fatal exception occurred during the server starting event
cpw.mods.fml.common.LoaderException: java.lang.AbstractMethodError

at cpw.mods.fml.common.LoadController.transition(LoadController.java:163) ~[LoadController.class:?]
at cpw.mods.fml.common.Loader.serverStarting(Loader.java:790) [Loader.class:?]
at cpw.mods.fml.common.FMLCommonHandler.handleServerStarting(FMLCommonHandler.java:278) [FMLCommonHandler.class:?]
at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:277) [lt.class:?]
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:387) [MinecraftServer.class:?]
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685) [li.class:?]
Caused by: java.lang.AbstractMethodError
at net.minecraft.command.CommandHandler.func_71560_a(CommandHandler.java:137) ~[z.class:?]
at cpw.mods.fml.common.event.FMLServerStartingEvent.registerServerCommand(FMLServerStartingEvent.java:44) ~[FMLServerStartingEvent.class:?]
at ca.sbstn.minecraft.forgehome.ForgeHome.init(Unknown Source) ~[ForgeHome.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_20-ea]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_20-ea]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_20-ea]
at java.lang.reflect.Method.invoke(Method.java:483) ~[?:1.8.0_20-ea]
at cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:532) ~[FMLModContainer.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_20-ea]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_20-ea]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_20-ea]
at java.lang.reflect.Method.invoke(Method.java:483) ~[?:1.8.0_20-ea]
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 cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:212) ~[LoadController.class:?]
at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:190) ~[LoadController.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_20-ea]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_20-ea]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_20-ea]
at java.lang.reflect.Method.invoke(Method.java:483) ~[?:1.8.0_20-ea]
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 cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:119) ~[LoadController.class:?]
at cpw.mods.fml.common.Loader.serverStarting(Loader.java:789) ~[Loader.class:?]
... 4 more
[23:31:20] [server thread/INFO] [FML]: Applying holder lookups
[23:31:20] [server thread/INFO] [FML]: Holder lookups applied
[23:31:20] [server thread/INFO] [FML]: The state engine was in incorrect state ERRORED and forced into state SERVER_STOPPED. Errors may have been discarded.
[23:31:20] [server thread/INFO] [FML]: The state engine was in incorrect state ERRORED and forced into state AVAILABLE. Errors may have been discarded

 

The last few lines in the trace

 

        at net.minecraft.command.CommandHandler.func_71560_a(CommandHandler.java:137) ~[z.class:?]
at cpw.mods.fml.common.event.FMLServerStartingEvent.registerServerCommand(FMLServerStartingEvent.java:44) ~[FMLServerStartingEvent.class:?]
at ca.sbstn.minecraft.forgehome.ForgeHome.init(Unknown Source) ~[ForgeHome.class:?]

 

I can go back through the minecraft source and see that

func_71560_a

doesn't exist. Any suggestions on how to solve this? I'd prefer to keep compiling with ant.

[tills13]

a) why does it matter. I'm comfortable with ant, not gradle - not to mention ant compiles in ~1 second while gradle takes up to 10.

b) I'm not complaining, I'm just looking for help.

c) thanks for the really helpful post.

 

 

[LexManos]

Don't bring me into stuff like this, Don't use ant unless you know exactly what you're doing. FG was built for a reason and it's dead simple to use. USE IT!.