Crash when joining servers and multiplayer

[Warnerm14]

Title: Crash when joining servers and multiplayer

Version: 3.1.2

OS: Windows 8 64-bit v6.2

Java Version: 1.7.0_21

Description of Problem:

When I try to join my tekkit server or a singleplayer world it gives me this error

Error Log:

Minecraft has crashed!     

      ----------------------     

 

Minecraft has stopped running because it encountered a problem.

 

 

 

 

--- BEGIN ERROR REPORT 5dd86d60 --------

Generated 10/17/13 3:51 PM

 

Minecraft: Minecraft 1.2.5

OS: Windows 8 (amd64) version 6.2

Java: 1.7.0_21, Oracle Corporation

VM: Java HotSpot 64-Bit Server VM (mixed mode), Oracle Corporation

LWJGL: 2.9.0

OpenGL: GeForce GT 630/PCIe/SSE2 version 4.2.0, NVIDIA Corporation

 

java.lang.IllegalArgumentException: URI is not hierarchical

at java.io.File.<init>(Unknown Source)

at codechicken.core.CommonUtils.getJarFile(CommonUtils.java:147)

at codechicken.core.CommonUtils.findClasses(CommonUtils.java:133)

at codechicken.nei.NEIConfig.loadConfig(NEIConfig.java:632)

at codechicken.nei.NEIConfig.loadWorld(NEIConfig.java:291)

at mod_NotEnoughItems.reset(mod_NotEnoughItems.java:46)

at mod_NotEnoughItems.onTickInGame(mod_NotEnoughItems.java:55)

at BaseMod.doTickInGame(BaseMod.java:48)

at cpw.mods.fml.common.modloader.BaseModTicker.sendTick(BaseModTicker.java:104)

at cpw.mods.fml.common.modloader.BaseModTicker.tickBaseMod(BaseModTicker.java:80)

at cpw.mods.fml.common.modloader.BaseModTicker.tickEnd(BaseModTicker.java:58)

at cpw.mods.fml.common.SingleIntervalHandler.tickEnd(SingleIntervalHandler.java:22)

at cpw.mods.fml.common.FMLCommonHandler.tickEnd(FMLCommonHandler.java:185)

at cpw.mods.fml.client.FMLClientHandler.onRenderTickEnd(FMLClientHandler.java:315)

at net.minecraft.client.Minecraft.x(Minecraft.java:878)

at net.minecraft.client.Minecraft.run(Minecraft.java:753)

at java.lang.Thread.run(Unknown Source)

--- END ERROR REPORT 98674cc6 ----------