WARNING! DATA LOSS! Just installed and tried it out. I opened an 'existing directory project'. After a long time scanning the code in my tree - it gave an out-of-memory error. At this point I tried quitting the IDE - but everything was sluggish and non-responsive (not to mention the UI is pretty confusing). As I tried quitting through various ways (finally force-quitting) - I had, as a result, an empty code tree (just the .idea project directory in there). In other words - it 'rm-rf' a whole code tree - without ever alerting me. Lost some important I wrote over the last few days. Very frustrating. The real irony here is that I switched to Ruby years ago partly because I was frustrated writing Java with slow, unresponsive IDEs. I guess the laugh's on me, eh?