After updating to 3.1, PyCharm hangs forever (on OSX 10.9.1, Python 2.7.5) during the \"indexing\" of packages.
For me this occurs while indexing scipy
(0.1
I had the same problem and "File | Invalidate Caches/Restart" had not helped because Pycharm didn't respond at all. I found ".Pycharm50" directory in my home directory -- it contains configuration files. After it's removal Pycharm launched as if you've just downloaded it, everything still goes well.