Thanks Jason - that was it!
I now have another error after inserting a record.
"The requested URL /share/MD0_DATA/Web/mason/admin/manageusers/searchusers/userdetail.php was not found on this server."
it appears to be grabbing additional folder details "/share/MD0_DATA/Web/" if I edit the URL to remove this on the browser the page loads correctly
The page code looks correct " $WA_redirectURL = "searchusers/userdetail.php";"
Any clues on this one?