I am running Vista 64-Bit SP2 RC and Outlook 2007 on a HP Pavillion laptop (about 4 months old). Almost all of my email attachments, specifically PDF and JPG files are not able to be opened. Regardless of whether I save them and then try to open them or try to open them directly from Outlook, I get error messages or a blank white screen (in the case of JPGs). In the case of PDFs, I am getting an error message, "There was an error opening this document. The file is damaged and could not be repaired." I have Adobe Reader 9.1.3. If I left-click on the attachment in the message window in Outlook, it says, "This file cannot be previewed because of an error with the following previewer: PDF Preview Handler for Vista To open this file in its own program, double-click it." Any ideas? Thank you!!! P.S. I just tried opening a PowerPoint file using OpenOffice 3.1 and it said "General Input/Output Error"