1) Recently some of the email attachments I receive are named simply as UNKNOWN PARAMETER VALUE (no filename extension).
2) This applies for any file type (Powerpoint, Word, PDF, WMV, etc). If I save the file and attach the correct filename extension, I am able to open the document with no problem.
3) I also noticed that the problem tends to occur with senders with Yahoo accounts
4) Finally, I own an Yahoo account myself. If I configure Google to automatically forward my emails to Yahoo and open the same email from my Yahoo Mail, the attachments appear named correctly on the Yahoo account!
This is quite a cryptic error. Any ideas?
Do you have an anti-virus installed that might be the culprit?
In Gmail's web-interface, I've had a lot of attachments and none with a problem.