@tiepld:
I'm not sure if the pop up blocker is disabled on that machine or not, however if it were related to that wouldn't IE notify me that there was something being blocked?
@scott:
I have assigned IE to open .VSD files by default as the Visio Viewer is just an add-on for IE, is it not?
I've also forwarded the email to myself and was able to open it without error on Windows 7 64bit. So I know there's nothing wrong with the file.
I did find, after doing even more research, that there was a possible fix which included the following: After installing Visio Viewer 2007 and SP2 for Visio Viewer 2007, install (re-install) Microsoft Update KB973709.
I think I'm going to give that ^ a shot and hope it works, Ill post back if it does/doesn't.
If you guys have any other input, let me know!
Thanks.