It happened to me. I have NOT been able to find a stable fix. If you have,
please post.
Here's a TEMPORARY fix...
Download and save to your hard drive "Microsoft Office Converter Pack" (from
the MS Website).
If you already have it installed, uninstall first, then reinstall.
This seems to work for a while. After a short while (I have not been able
to figure out why or when), you'll lose the ability to save as jpg. When
this happens, uninstall the Microsoft Office Converter Pack and re-install.
(That's why you need to save it to your hard drive).
Hope this helps someone.