I know others have encountered this problem. My question is has anyone conquered it? I found a workaround but nothing that addressed my specific bug:
1. With Flash Builder 4: - fails with a custom External Tools Configuration - fails running via Terminal - fails running ANT version - ALWAYS returns: Error: '' is not a directory 2. With the FLEX 3.5 SDK - runs fine with Terminal invocation of ASDOC I checked to see if the flex-config.xml files were different in any way but couldn't see anything obvious.

