I have a couple of users who get a "We cannot proceed" error when they try to preview a reply. I thought I saw something on this before, but I couldn't find it. I know one of the users has Windows XP with AOL 9.0. My board is running 6.5.4 with PHP 4.3.10 and MySQL 4.0.18 under MacOS X 10.4.7.

Any suggestions? <img src="https://www.ubbcentral.com/boards/images/graemlins/confused.gif" alt="" />