In PowerPoint 2010 on Windows 7 - 64 bit, when File / Open is selected, an error message comes up stating, "An error occured while opening the file dialog. Please save your presentation, exit, and restart PowerPoint." I ran the Office repair routine but there was no change.



I can double click existing pptx files or drag them into the PowerPoint application and they will open normally. The file/open dialog box works fine in Word and Excel. Does anyone have suggestions on a fix for this PowerPoint problem?