insane_gravy

I did that. I downloaded a clean minecraft.jar and minecraft_server.jar. I still get the same problem.

I am attempting to decompile Minecraft 1.4.2. I have a clean .jar file and the lates version of MCP. After putting everything in place, I run install.cmd. Not too long after, I encounter this error: Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 3, Size: 2 at java.util.ArrayList.rangeCheckForAdd(ArrayList.java:612) at java.util.ArrayList.add(ArrayList.java:426) at cpw.mods.fml.common.asm.transformers.MCPMerger.processFields(MCPMerger.java:468) at cpw.mods.fml.common.asm.transformers.MCPMerger.processClass(MCPMerger.java:384) at cpw.mods.fml.common.asm.transformers.MCPMerger.processJar(MCPMerger.java:217) at cpw.mods.fml.common.asm.transformers.MCPMerger.main(MCPMerger.java:107) Decompile Exception: 1 Press any key to continue . . . I have never seen this error before, and I know everything is up to date. How do I solve this?