Sorry for posting in here. Didn't spot the bug forum
Apologies if this has already been reported.
If you click on the 'Profile' link from post.asp and modify your profile, you get returned to 'post.asp' as you should but the hidden variable 'refer' is then blank so when you post you get the following error :-
OK - got it slightly wrong. I've modified the code to use a response.redirect instead of the meta refresh (its quicker) but I've have just cut & pasted this from this forum. Notice how the 'Refer' hidden varaiable is blank. When you post it just leaves you no where :-