FML doesn't load when running mod in eclipse

[SharkyGAMER]

I get the following error every-time I try to run my mod in eclipse.

Aug 11, 2013 8:03:20 AM net.minecraft.launchwrapper.LogWrapper log

INFO: Using tweak class name cpw.mods.fml.common.launcher.FMLTweaker

2013-08-11 08:03:20 [iNFO] [ForgeModLoader] Forge Mod Loader version 6.2.43.819 for Minecraft 1.6.2 loading

2013-08-11 08:03:20 [iNFO] [ForgeModLoader] Java is Java HotSpot 64-Bit Server VM, version 1.6.0_51, running on Mac OS X:x86_64:10.8.4, installed at /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home

2013-08-11 08:03:20 [iNFO] [ForgeModLoader] Managed to load a deobfuscated Minecraft name- we are in a deobfuscated environment. Skipping runtime deobfuscation

2013-08-11 08:03:20 [iNFO] [sTDOUT] Loaded 39 rules from AccessTransformer config file fml_at.cfg

2013-08-11 08:03:20 [iNFO] [sTDOUT] Loaded 107 rules from AccessTransformer config file forge_at.cfg

2013-08-11 08:03:20 [sEVERE] [ForgeModLoader] Unable to launch

java.lang.RuntimeException: java.lang.NullPointerException

at cpw.mods.fml.relauncher.CoreModManager.injectTransformers(CoreModManager.java:402)

at cpw.mods.fml.relauncher.FMLLaunchHandler.injectPostfixTransformers(FMLLaunchHandler.java:108)

at cpw.mods.fml.relauncher.FMLLaunchHandler.appendCoreMods(FMLLaunchHandler.java:113)

at cpw.mods.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:78)

at net.minecraft.launchwrapper.Launch.launch(Launch.java:51)

at net.minecraft.launchwrapper.Launch.main(Launch.java:18)

Caused by: java.lang.NullPointerException

at LZMA.LzmaInputStream.readHeader(LzmaInputStream.java:246)

at LZMA.LzmaInputStream.<init>(LzmaInputStream.java:65)

at cpw.mods.fml.common.asm.transformers.deobf.LZMAInputSupplier.getInput(LZMAInputSupplier.java:35)

at cpw.mods.fml.common.asm.transformers.deobf.LZMAInputSupplier.getInput(LZMAInputSupplier.java:1)

at com.google.common.io.ByteStreams$6.openStream(ByteStreams.java:989)

at com.google.common.io.ByteSource$AsCharSource.openStream(ByteSource.java:287)

at com.google.common.io.CharStreams$3.getInput(CharStreams.java:508)

at com.google.common.io.CharStreams$3.getInput(CharStreams.java:505)

at com.google.common.io.CharStreams.readLines(CharStreams.java:319)

at cpw.mods.fml.common.asm.transformers.deobf.FMLDeobfuscatingRemapper.setup(FMLDeobfuscatingRemapper.java:136)

at cpw.mods.fml.common.asm.FMLSanityChecker.injectData(FMLSanityChecker.java:226)

at cpw.mods.fml.relauncher.CoreModManager.injectTransformers(CoreModManager.java:397)

... 5 more

 

I have tried recompiling, decompiling, updating mcp and forge and switching version several times. None have worked. Minecraft will run fine through the launcher and it's using the same version.

 

I am new to java and don't have much experience with it. I would guess the error is to do with LMZA files, but I don't know how to fix.

 

Thank you for reading answer as soon as possible because I'm going on holiday tomorrow.