Have you applied all Updates and tried clicking on Help, Detect and Repair?
What version of PowerPoint?

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Thanks,
Glenna Shaw
Microsoft PowerPoint MVP Team
http://www.pptmagic.com
> my powerpoint hangs whenever slide sorter is enabled, however if i open a
> powerpoint file with slide sorter enabled, i can get powerpoint to work again
> if i open process explorer. powerpoint works fine only when process explorer
> is started at the same time . please help :)