Made the change and this worked for me, also able to post new topics! Thanks 
Hi Paul, I noticed the error only displays when logged out of the site, surely it would appear all the time regardless of login status ?
I have the same problem, only appears in Internet Explorer, tried turn off php safe mode as mentioned in another thread, no luck. Seems a few people have this problem but no resolution has been found yet ?
Just saw the other posts, should have scanned the forum first 
Thanks @erikshosting just what I was looking for !