Recently I've had a problem with PowerPoiint where certain mpg and avi files
will not play when clicked in PowerPoint. Here are the symptoms, if anyone
has any insight I'd be most grateful:

When double-clicked, the window turns blank.

The problem does not apply to all avi or mpg files, but certain ones will
consistently either work or not.

MS help does describe a similar problem with mpgs, relating to the length of
the filepath, but that is not the problem here.

I can't discern any pattern to the failure to play...I have files exported
from the same app with the same settings from the same source; one will play
and one won't.

Reinstalling the codecs and service packs makes no difference.

Anybody got an idea?

thanks,
mike@zoommarketing.com