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setupDecompWorkspace throws error during task :mergeJars


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I at attempting to perform the set up of a Forge development environment on Mac OSX (Mavericks) and I consistently get the following error:


* What went wrong:

Execution failed for task ':mergeJars'.

> java.util.zip.ZipException: error in opening zip file


I have tried with both the latest version of Forge ( and the recommended version ( In both cases I receive the zip file error.


I did notice that the folder referenced in the logs at /Users/scott/.gradle/caches/minecraft/net/minecraft/minecraft_merged/1.7.2/ doesn't contain the minecraft_merged-1.7.2.jar, but I'm not sure if that's really the issue. Anyone have an idea?


Build log:




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