If anyone on OSX has trouble launching the updated .app bundle: check the JVM specified in info.plist (right-click on the .app -&gt; Show Package Contents -&gt; Contents -&gt; Info.plist) is 1.7* or (better, for Retina support) 1.8* . The default 1.6* just kept crashing for me (PyCharm 3.4.4, OSX 10.11.4, way too many Java versions installed for my own mental health).