I am sorry wes616 my intention is to keep everyone up to date with the latest features and so I don't end up trying to support older versions of the software. That said the upgrade seems to be causing some problems out there.

Here is a quick fix:
The zip file you download for XLC version 03_08 includes the latest copy of XLC.dll. All you need to do is copy it and paste in into the XLC install directory.

Let me know if this gets you going and I'll update the upgrade instructions (it might be simpler for people to do this rather than running the install programs).