The session timed out, so this is not really a problem. He just needs to re-login. Did you try posting yourself to see if this is an issue?

Spoke too soon. The problem is back again. 

This ONLY occurs when copying and pasting into SMF. Everything else (including attachments) works just fine.

What could this be? 

EDIT: I have installed the latest version of Mambo-SMF. The "session timeout" error has disappeared. But now, I get a "board doesn't exist" error message. Once again, this only happens when I copy and paste from an external application (i.e., email, word processor, etc.) into the body of a response.

Here is the REALLY strange part - I can copy and paste if I do it one paragraph at a time. Regardless of the length of the paragraphs, I can only post one at a time.

I'v never seen this particular quirk before. 

THIS JUST IN! I now KNOW this has to be an issue with MY setup. I just tried the copy-and-paste routine here (I deleted it right away when finished). I had absolutely NO PROBLEM and everything went as it should.

How is this forum configured in terms of sessions, etc.? There is some kind of hiccup in my setup that I need to track down. At least this is a little more information than I had before. Thanks in advance for the help.