[URI is not hierarchical crash]

I posted a bug similar to this too. If it's happening everywhere, it could be a bug associated with an update maybe? Gods knows.

[Tekkit Classic crashes ingame]

Title: Tekkit Classic crashes ingame

Version: 3.1.2

OS: Windows Vista 32 Bit (x86) version 6.0

Java Version: 1.7.0_11

Description of Problem:

I log in on the Technic Launcher and it loads up the game as normal, except the Technic Launcher bit doesn't close. If I try to join a server or create/open a world, it attempts to make a world until the bar fills and all that, then crashes.

Error Messages:

Minecraft has crashed!

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

Minecraft has stopped running because it encountered a problem.

Error Log:

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)