Помогите Ошибка с forge майнкрафт 1.6.4

Всем привет! Я решил убрать надписи от forge на 1.6.4, засунул классы в 1.6.4-Forge9.11.1.953.jar(blt.class, avo.class) и ошибка:

Код:

Client> 2013-11-30 11:50:09 [SEVERE] [ForgeModLoader] There is a binary discrepency between the expected input class blt (blt) and the actual class. Checksum on disk is 67198a0b, in patch 5e798491. Things are probably about to go very wrong. Did you put something into the jar file?
Client> 2013-11-30 11:50:09 [SEVERE] [ForgeModLoader] The game is going to exit, because this is a critical error, and it is very improbable that the modded game will work, please obtain clean jar files.
Game ended with bad state (exit code 1)
Ignoring visibility rule and showing launcher due to a game crash
Deleting C:\Users\nashkomp\minecraft\versions\1.6.4-Forge9.11.1.953\1.6.4-Forge9.11.1.953-natives-3808291060651

Из-за ошибки не заходит в игру Работал в MCP и ошибок никаких ошибок. Help......