Interesting. I wonder if it has anything to do with how the systems here are managed by our IT department. I suppose I need to find out where the log is stored, and send that on. Would you happen to know?
That was exactly the problem, thanks for the help, Kelvin.
I had to follow the debug steps on your help pages to get past a 1603 error, and uninstall all old files, but eventually got it to work. I very much appreciate how much work has gone into the installation debug pages on your website!