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i have a problem my friend whant s to join my private server but he cant open 1.0.5 client pack he gets this error
[20:10:47] [main/ERROR]: Unable to launch
java.lang.ClassNotFoundException: cpw.mods.fml.common.launcher.FMLTweaker
at java.net.URLClassLoader$1.run(Unknown Source) ~[?:1.7.0_67]...
