PyCharm Pro crashing on OS X (please help)

I'm new to python and PyCharm. I have both CE and Pro running on my machine: OS X 10.10

Community Edition runs just fine, but when I open the Professional Edition it opens, sits in the launcher for a few seconds then closes.

I opened up my console, cleared it and ran PyCharm again. Here's all the output:

6/17/15 6:46:02.294 PM pycharm[13752]: Value of PYCHARM_JDK: (null)
6/17/15 6:46:02.300 PM pycharm[13752]: fullFileName is: /Applications/PyCharm.app/Contents/bin/pycharm.vmoptions
6/17/15 6:46:02.300 PM pycharm[13752]: fullFileName exists: /Applications/PyCharm.app/Contents/bin/pycharm.vmoptions
6/17/15 6:46:02.300 PM pycharm[13752]: Value of PYCHARM_VM_OPTIONS is (null)
6/17/15 6:46:02.300 PM pycharm[13752]: Processing VMOptions file at /Applications/PyCharm.app/Contents/bin/pycharm.vmoptions
6/17/15 6:46:02.300 PM pycharm[13752]: Done
6/17/15 6:46:02.300 PM pycharm[13752]: Processing VMOptions file at /Users/myusername/Library/Preferences/PyCharm40/pycharm.vmoptions
6/17/15 6:46:02.300 PM pycharm[13752]: No content found
6/17/15 6:46:02.300 PM pycharm[13752]: Processing VMOptions file at
6/17/15 6:46:02.301 PM pycharm[13752]: No content found
6/17/15 6:46:03.582 PM com.apple.xpc.launchd[1]: (com.jetbrains.pycharm.382864[13752]) Service exited with abnormal code: 6

I looked, and there is no pycharm.vmoptions in ~/Library/Preferences/PyCharm40/

What to do?

(thanks in advance)