I've had to re-install the application after my application became unusable.
I've run into a handful of show stoppers, and real annoying things. noted on OSX first imports started importing in the middle of my class files with the auto mode instead of at the top 4.00 sdk debugger fails often on my AS project using the the 4.00 sdk my project became unreadable had to check it out again, kept telling me to restart the find replace plugin failed, and made my night a disaster and finally the software had to be reinstalled because my workspace wouldn't reset to FLASH And, last but not least, my software, full release says BETA on the top bar. Hope a patch comes out soon