Error when trying to re-invite a user

Error when trying to re-invite a user

Hi

A user invited to the system has not received an invitation. I am attempting to "re-invite" but I get the following errors:

"TypeError: getObj("freezeMessageDiv1") is null"   (FireFox)
"[object Error]" (Internet Explorer)

Please advise if there is any other way to re-invite the user, or a fix for this error.

Thanks