A little more information on this:


1) When I try double-clicking the PDF attachment, I get this pop-up: "Cannot create file." Right-click the folder you want to create the file in, and then click Properties on the shortcut menu to check your permissions for that folder."


2) When I right-click and "Save As" to save it to a directory, I get this pop-up: "Cannot save the attachment. Cannot create file. Right-click the folder... [same as above]".


3) This problem only started to happen a couple of weeks ago. I was able to download these files without a problem before then. I don't believe there are any new add-ins installed.