In that case you might need to uninstall, then use a product like CCleaner or Revo Uninstaller to erase the left-over registry entries, then reinstall. You may also need to manuall delete any of the Office initialization files & folders that an uninstall leaves behind before reinstalling (backup your data first!!) - see 'Method 4: Remove Microsoft Office 2010 suites manually' at http://support.microsoft.com/kb/290301 for details.

__________________
Cheers,
Paul Edstein
[Fmr MS MVP - Word]

After following instructions I did unistall Office 2010, used the cleanning programs, went to the Register and remove all instances of Microsoft Office going back to Office 12, 13, 14 amd 15. I did remove all Microsoft Office folders and files and still I have the same problem.

I guess the solution I have is to wait for Office 365 final version and also WIndows 8 as I don't seem to have any other alternatives at present. If somebody has any ideas please let me know. I can see the files in Outlook using Preview as that program is working fine. Frank

Guys wanted to let you know that I resolved this issue, the problem was in the PowerPoint setup, somehow I had a checkmark on Protected View within Trust Center. The checkmark was checked at Enable Protected View for Outlook Attachments.

I appreciated you guys response but finally I was able to resolved it. Honesly I don't know how that command had the checkmark.

Thanks to all,

Frank

Frank, Thanks, you saved me a lot of time. I also had a user that had the preview protect boxed checked in the trusted center.