Images Error & Metafile is not valid

Hi,

First, I have a problem with some images in my ActiveX application.
Randomly, a different image from the report is not available (Preview) and
don't print too.

Second, anyone knows where the "Metafile is not valid" error come from?

I'm using Delphi 5 and QuickReport 3.0 (the version that comes with D5).

Thanks,
Stef