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Unable to port Launcher to work with Forge Mod Loader - "unable to inject"


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i'm trying to port my adaption of the launcher for a mod-package to work with a newer forge version.

I already implemented the WrapperClass setting and the .replace() commands on the Applet-Holder - but on every launch i'll get the error below.


When i copy the source from FML which is triggering this error - it works without a problem. Just when it's executed from within minecraft it's not recognized. Could it be, that the class is not available from within minecraft anymore after launch?


[MCLauncher] Setting WrapperClass to: com.kokakiwi.mclauncher.core.Launcher
[MCLauncher] INFO : Start game.
2013-01-11 02:36:20 [iNFO] [ForgeModLoader] Forge Mod Loader version for Minecraft 1.4.7 loading
2013-01-11 02:36:20 [sEVERE] [ForgeModLoader] FML appears to be missing any signature data. This is not a good thing
2013-01-11 02:36:21 [sEVERE] [ForgeModLoader] Found unknown applet parent com.kokakiwi.mclauncher.core.Launcher, unable to inject!




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