Because the previous thread was DDTd during the cleanup, I repost it here.
- Original text-
Made a simple command line program that converts v13 packed addons to v12 (or simply extracts them). Currently doesn't extract things like version (couldn't find it in addon files) and doesn't convert icon, but generates info.txt.
Download and source: https://skydrive.live.com/redir.aspx?cid=65b4d1e61b5cd82a&resid=65B4D1E61B5C D82A!666&parid=65B4D1E61B5CD82A!382
Drag-and-drop .gm file to extract it.