Okay, there's a temp fix for this. 2 Solutions:
1. If you have a pc you can use the raw2dng.exe there. It works for files over 2gb.
2. If you only have OSX, a workaround has been created. Not ideal, but read:
http://www.magiclantern.fm/forum/index.php?topic=5404.msg36738#msg36738