java.util.zip.ZipException: duplicate entry: assembly-descriptor.xml

I am trialling Idea for Andorid work. I have two 'modules' in my project and am using Google GSON as an "External Library" and I get:

Compilation completed with 1 error and 0 warnings
1 error
0 warnings
java.util.zip.ZipException: duplicate entry: assembly-descriptor.xml

I can't find the file, I can't find any information, I don't use ZipException myself anywhere and double clicking on the error yields no ability to do anything whatsoever.

Anybody got any idea on what to do next?

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Original message URL: http://devnet.jetbrains.net/message/5269665#5269665