(HELP NEEDED) SKP file preview

[pibuz]

Hi guys! Sorry to bother..
Since...today Windows XP doesn't allow me to see the preview thumbnail of my skp files anymore.
Even if I set View -> Thumbnail, the only thing I see is a large Sketchup.exe icon (the house with the pencil) for all files..
The preview doesn't appear in the blue lateral side either..

What can i do to re-enable the feature?

Thank you in advance!

EDIT: sorry moderators! I don't know why, but it seems i incidentally added my post to a topic not at all related!! So sorry! Please move it to the proper space!

[Al Hart]

Have you tried uninstalling and reinstalling SketchUp?