I'm not for sure if it's the same problem... But after updating DataAssist the redirect url stopped working. After saving the record the page would reload itself instead of going to the redirect url specified. Discovered that rel2abs was changing the specified redirect url to an absolute path that did not exist causing the redirect to fail. I deleted the call to rel2abs (shown below) and the redirect url started working again.
if (function_exists("rel2abs")) $WA_redirectURL = $WA_redirectURL?rel2abs($WA_redirectURL,dirname(__FILE__)):"";