Forge Server Java NullPointerException?

[Kika]

Please Help. haha

 

I've been making a server with Forge 1.10.2 - 12.18.1.2011

 

I installed a mod that turns out it needed Forge 1.10.2 - 12.18.1.2036 (or something like that). After having a few issues installing the latest Minecraft forge I decided to downgrade the mod to a 1.9.4 version that ended up working with my Forge server even though it was a 1.10.2

 

However, when I tried to open Minecraft, I got Game Output errors. I'm savy with Forge Servers, but this was just beyond my comprehension of even understanding. Please help me understand what I did to ruin the Minecraft client. lol. My Forge Server is seemingly working still just fine.

 

I couldn't figure out where to upload a txt document, so I'm sorry, but here's the long error message:

 

2016-09-03 23:52:40,956 WARN Unable to instantiate org.fusesource.jansi.WindowsAnsiOutputStream

2016-09-03 23:52:40,957 WARN Unable to instantiate org.fusesource.jansi.WindowsAnsiOutputStream

[23:52:40] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker

[23:52:41] [main/INFO] [LaunchWrapper]: Using primary tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker

[23:52:41] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLTweaker

[23:52:41] [main/INFO] [FML]: Forge Mod Loader version 12.18.1.2011 for Minecraft 1.10.2 loading

[23:52:41] [main/INFO] [FML]: Java is Java HotSpot 64-Bit Server VM, version 1.8.0_25, running on Windows 10:amd64:10.0, installed at D:\PROGRAM FILES\Minecraft\runtime\jre-x64\1.8.0_25

[23:52:41] [main/INFO] [sTDERR]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]: java.lang.NoClassDefFoundError: cpw/mods/fml/relauncher/IFMLLoadingPlugin

[23:52:41] [main/INFO] [sTDERR]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]: at java.lang.ClassLoader.defineClass1(Native Method)

[23:52:41] [main/INFO] [sTDERR]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]: at java.lang.ClassLoader.defineClass(ClassLoader.java:760)

[23:52:41] [main/INFO] [sTDERR]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]: at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)

[23:52:41] [main/INFO] [sTDERR]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]: at java.net.URLClassLoader.defineClass(URLClassLoader.java:455)

[23:52:41] [main/INFO] [sTDERR]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]: at java.net.URLClassLoader.access$100(URLClassLoader.java:73)

[23:52:41] [main/INFO] [sTDERR]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]: at java.net.URLClassLoader$1.run(URLClassLoader.java:367)

[23:52:41] [main/INFO] [sTDERR]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]: at java.net.URLClassLoader$1.run(URLClassLoader.java:361)

[23:52:41] [main/INFO] [sTDERR]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]: at java.security.AccessController.doPrivileged(Native Method)

[23:52:41] [main/INFO] [sTDERR]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]: at java.net.URLClassLoader.findClass(URLClassLoader.java:360)

[23:52:41] [main/INFO] [sTDERR]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:117)

[23:52:41] [main/INFO] [sTDERR]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]: at java.lang.ClassLoader.loadClass(ClassLoader.java:424)

[23:52:41] [main/INFO] [sTDERR]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]: at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

[23:52:41] [main/INFO] [sTDERR]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]: at java.lang.Class.forName0(Native Method)

[23:52:41] [main/INFO] [sTDERR]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]: at java.lang.Class.forName(Class.java:344)

[23:52:41] [main/INFO] [sTDERR]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]: at net.minecraftforge.fml.relauncher.CoreModManager.loadCoreMod(CoreModManager.java:543)

[23:52:41] [main/INFO] [sTDERR]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]: at net.minecraftforge.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:423)

[23:52:41] [main/INFO] [sTDERR]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]: at net.minecraftforge.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:253)

[23:52:41] [main/INFO] [sTDERR]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]: at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:102)

[23:52:41] [main/INFO] [sTDERR]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]: at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:79)

[23:52:41] [main/INFO] [sTDERR]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]: at net.minecraftforge.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:41)

[23:52:41] [main/INFO] [sTDERR]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]: at net.minecraftforge.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:138)

[23:52:41] [main/INFO] [sTDERR]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]: at net.minecraft.launchwrapper.Launch.launch(Launch.java:115)

[23:52:41] [main/INFO] [sTDERR]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]: at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.Throwable:printStackTrace:634]: Caused by: java.lang.ClassNotFoundException: cpw.mods.fml.relauncher.IFMLLoadingPlugin

[23:52:41] [main/INFO] [sTDERR]: [java.lang.Throwable:printStackTrace:634]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.Throwable:printStackTrace:634]: at java.lang.ClassLoader.loadClass(ClassLoader.java:424)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.Throwable:printStackTrace:634]: at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.Throwable:printStackTrace:634]: ... 23 more

[23:52:41] [main/INFO] [sTDERR]: [java.lang.Throwable:printStackTrace:643]: Caused by: java.lang.NullPointerException

[23:52:41] [main/INFO] [sTDERR]: [java.lang.Throwable:printStackTrace:643]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.Throwable:printStackTrace:643]: ... 25 more

[23:52:41] [main/ERROR] [FML]: An error occurred trying to configure the minecraft home at C:\Users\Krist\AppData\Roaming\.minecraft for Forge Mod Loader

java.lang.NoClassDefFoundError: cpw/mods/fml/relauncher/IFMLLoadingPlugin

at java.lang.ClassLoader.defineClass1(Native Method) ~[?:1.8.0_25]

at java.lang.ClassLoader.defineClass(ClassLoader.java:760) ~[?:1.8.0_25]

at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) ~[?:1.8.0_25]

at java.net.URLClassLoader.defineClass(URLClassLoader.java:455) ~[?:1.8.0_25]

at java.net.URLClassLoader.access$100(URLClassLoader.java:73) ~[?:1.8.0_25]

at java.net.URLClassLoader$1.run(URLClassLoader.java:367) ~[?:1.8.0_25]

at java.net.URLClassLoader$1.run(URLClassLoader.java:361) ~[?:1.8.0_25]

at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_25]

at java.net.URLClassLoader.findClass(URLClassLoader.java:360) ~[?:1.8.0_25]

at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:117) ~[launchwrapper-1.12.jar:?]

at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_25]

at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_25]

at java.lang.Class.forName0(Native Method) ~[?:1.8.0_25]

at java.lang.Class.forName(Class.java:344) ~[?:1.8.0_25]

at net.minecraftforge.fml.relauncher.CoreModManager.loadCoreMod(CoreModManager.java:543) ~[forge-1.10.2-12.18.1.2011.jar:?]

at net.minecraftforge.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:423) ~[forge-1.10.2-12.18.1.2011.jar:?]

at net.minecraftforge.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:253) ~[forge-1.10.2-12.18.1.2011.jar:?]

at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:102) [forge-1.10.2-12.18.1.2011.jar:?]

at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:79) [forge-1.10.2-12.18.1.2011.jar:?]

at net.minecraftforge.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:41) [forge-1.10.2-12.18.1.2011.jar:?]

at net.minecraftforge.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:138) [forge-1.10.2-12.18.1.2011.jar:?]

at net.minecraft.launchwrapper.Launch.launch(Launch.java:115) [launchwrapper-1.12.jar:?]

at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]

Caused by: java.lang.ClassNotFoundException: cpw.mods.fml.relauncher.IFMLLoadingPlugin

at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191) ~[launchwrapper-1.12.jar:?]

at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_25]

at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_25]

... 23 more

Caused by: java.lang.NullPointerException

at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182) ~[launchwrapper-1.12.jar:?]

at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_25]

at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_25]

... 23 more

Exception in thread "main" [23:52:41] [main/INFO] [sTDERR]: [java.lang.ThreadGroup:uncaughtException:1052]: java.lang.NoClassDefFoundError: cpw/mods/fml/relauncher/IFMLLoadingPlugin

[23:52:41] [main/INFO] [sTDERR]: [java.lang.ThreadGroup:uncaughtException:1052]: at java.lang.ClassLoader.defineClass1(Native Method)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.ThreadGroup:uncaughtException:1052]: at java.lang.ClassLoader.defineClass(ClassLoader.java:760)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.ThreadGroup:uncaughtException:1052]: at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.ThreadGroup:uncaughtException:1052]: at java.net.URLClassLoader.defineClass(URLClassLoader.java:455)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.ThreadGroup:uncaughtException:1052]: at java.net.URLClassLoader.access$100(URLClassLoader.java:73)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.ThreadGroup:uncaughtException:1052]: at java.net.URLClassLoader$1.run(URLClassLoader.java:367)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.ThreadGroup:uncaughtException:1052]: at java.net.URLClassLoader$1.run(URLClassLoader.java:361)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.ThreadGroup:uncaughtException:1052]: at java.security.AccessController.doPrivileged(Native Method)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.ThreadGroup:uncaughtException:1052]: at java.net.URLClassLoader.findClass(URLClassLoader.java:360)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.ThreadGroup:uncaughtException:1052]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:117)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.ThreadGroup:uncaughtException:1052]: at java.lang.ClassLoader.loadClass(ClassLoader.java:424)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.ThreadGroup:uncaughtException:1052]: at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.ThreadGroup:uncaughtException:1052]: at java.lang.Class.forName0(Native Method)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.ThreadGroup:uncaughtException:1052]: at java.lang.Class.forName(Class.java:344)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.ThreadGroup:uncaughtException:1052]: at net.minecraftforge.fml.relauncher.CoreModManager.loadCoreMod(CoreModManager.java:543)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.ThreadGroup:uncaughtException:1052]: at net.minecraftforge.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:423)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.ThreadGroup:uncaughtException:1052]: at net.minecraftforge.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:253)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.ThreadGroup:uncaughtException:1052]: at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:102)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.ThreadGroup:uncaughtException:1052]: at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:79)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.ThreadGroup:uncaughtException:1052]: at net.minecraftforge.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:41)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.ThreadGroup:uncaughtException:1052]: at net.minecraftforge.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:138)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.ThreadGroup:uncaughtException:1052]: at net.minecraft.launchwrapper.Launch.launch(Launch.java:115)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.ThreadGroup:uncaughtException:1052]: at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.ThreadGroup:uncaughtException:1061]: Caused by: java.lang.ClassNotFoundException: cpw.mods.fml.relauncher.IFMLLoadingPlugin

[23:52:41] [main/INFO] [sTDERR]: [java.lang.ThreadGroup:uncaughtException:1061]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.ThreadGroup:uncaughtException:1061]: at java.lang.ClassLoader.loadClass(ClassLoader.java:424)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.ThreadGroup:uncaughtException:1061]: at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.ThreadGroup:uncaughtException:1061]: ... 23 more

[23:52:41] [main/INFO] [sTDERR]: [java.lang.Throwable:printStackTrace:643]: Caused by: java.lang.NullPointerException

[23:52:41] [main/INFO] [sTDERR]: [java.lang.Throwable:printStackTrace:643]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)

[23:52:41] [main/INFO] [sTDERR]: [java.lang.Throwable:printStackTrace:643]: ... 25 more

 

 

[Choonster]

[23:52:41] [main/INFO] [sTDERR]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]: java.lang.NoClassDefFoundError: cpw/mods/fml/relauncher/IFMLLoadingPlugin

 

You installed a coremod built for 1.7.10. If you don't know which one, upload the full FML log (logs/fml-client-latest.log) to Gist and link it here.

 

You also posted this in the wrong section (Modder Support instead of Support and Bug Reports), but it should be moved soon.

[Kika]

hallelujah. I doubled checked and a mod was installed locally in my .minecraft folder, but not in my server folder. Even though it wasn't in my server folder, minecraft worked again once I deleted it. Thank you. Sorry I can't believe I missed that. Sorry for installing in the wrong section.

 

Have a great day.

 

Kika

[Pixstatic]

Yeah, you might find having mods installed in one location but not the other or having outdated mods totally stuffs up your game. That's why you get errors.