What steps will reproduce the problem? 1. Install latest Pencil version on Mac OSX Snow Leopard 10.6.4 2. Open up New Pencil Sketch Window in Firefox 3. View Options/Settings (one with General, Doc Exp, Clipart Browser, etc.) from Menu 4. Can't close this window to return to the sketch, must quit Firefox

Until this problem is fixed you can use Command+W to close the options dialog.