Right, I have been looking into this - because I love rib.net and the wealth of knowledge, and the help I have got from here. And I really don't want to see all the members leave - or any come to that!
In the files, some files have been incorrectly setup for instance..
These urls I am sure should not have the "http://cdn.rib.net/forum/" in front of them, and without them the urls work fine.
If we can get those two urls fixed, I am happy to look more into the other issues.