My company have 2 pc have this kind of problem too.
Do you have receive any solutions now ?
The only solutions I have found are to either downgrade Adobe Reader to 9.3.4 or upgrade Office to at least 2007
Not really the best solutions - would prefer a proper fix.
We are experiencing same kind of issues in our company environment. Does anybody found solution? So far we have 2 pcs having this issue.
Uncheck Symantec Antivirus in Outlook Add-ons then restart outlook and try attaching again. Mostly found on WinXP machines. Hope this helps. Rock on friends.