I am having these issues too. Brand new macbook pro running Mavericks. Everything updated. Flash Builder is just very unstable.
- ADL keeps crashing whenever I run a test multiple times and let it sit for a few minutes.
- Flash Builder does not like the new file system. For some reason it is trying to open folders on the system that don't exist, like when I try to import an .swc.
Flash Builder 4.7 on OSX requires Java version 1.6. Mavericks comes with Java version 1.7, so you'll need to install the older version.
You may also want to bump the specs in the "Adobe FlashBuilder 4.7.ini" file.
More information in this thread.