3
Thanks, Zyspec, you pointed me in the right direction and I think I'm all up and running again fine.
The Virtual Path in my mainfile.php had an extra "/" after the domain name - hence the extra "/" in the links - I don't know why MyAlbum didn't have this extra one, though!
Now I can edit users again! Great!
As for upgrading Xoops, I know I should but I'm of the opinion that if it isn't broken, don't fix it. I know it was broken for a bit this time but it was fixable. When I have a minute I'll make backups and do the upgrade (when I have a minute lol).
Thanks again for you help, Zyspec.