I'm running InDesign CS6 v8.0.1 on a MacBook Pro running OSX 10.8.2
Whenever I double click a paragraph style to try and edit it, InDesign freezes and won't even let me quit. When I try to quit using the menu by holding and clicking the InDesign icon in my dock I get an error message saying that "Cannot handle request because a model dialogue or alert is inactive." I then have to force quit. Upon relaunching the application all of my personal setting are reset to the defaults (workspace, greeking, etc.)
I'm not sure if this is related, but I randomly found an .idms file on my desktop today too. Not sure where it belongs or where it came from. (Snippet_30719E70D.idms)
Any help would be greatly appreciated!
The error seems to indicate the edit style dialog is open, but not visible. Try closing or moving some windows, if you can.