[TheFightingSpirit]

Another update, it seems to be possible to view the entire thread when logged out or as a guest. Not ideal... but at least it can actually be read somehow.

I've also searched a number of tech support forums and the concensus seems to be that there is an easy fix but you have to find the line the error is on first (time consuming) before you can alter the PHP to ignore it.

It may also have something to do with having an outdated (possibly exploitable) version of either vB or PHP, but no one is particularly certain.

EDIT (again...): I'm not sure but I think the problem has fixed itself when the cookies were cleared after I logged out. Could some check for me the thread is now working?