I have a pdf that can be opened fine in adobe reader v7,8, and 9. I upload it to my server via a fileupload control (asp.net web app), and it is saved just fine, at least it seems. BUT - it can no longer be opened by adobe reader 7 (8 and 9 can open it). But many of our customers have reader 7 and I cannot simply require them to upgrade. Also - no problems with other file types (.doc/x, .xls/x, etc). The file is the exact same # of bytes on the server as it was before it was uploaded.
Anyone seen this?
