I'm having exactly the same problem, and the project is due to go live on Monday. Help!
Created pdf says its corrupted when using version 7 of Acrobat and Reader, yet opens fine in version 8. I've tested it both on PC and Mac, with various browsers. I can copy the supposedly corrupted pdf file over to my dev PC and it opens no problems.
I've downloaded the latest aspose.pdf dll and that hasn't fixed the problem.
Need to get this sorted ASAP as it's a show stopper, any Ideas?