strRecipientEmailAddress is just one of the values that get passed to the sendmail function:
Function SendMail(ByVal strEmailBodyMessage, ByVal strRecipientName, ByVal strRecipientEmailAddress, ByVal strFromEmailName, ByVal strFromEmailAddress, ByVal strSubject, strMailComponent, blnHTML)
Find the line that is calling the sendmail function for whatever it is you are doing and then make sure all the values are being passed. If you have a debugger, just put a breakpoint on the sendmail function and you should be able to solve your problem fast. If not, get your response.write's going. Good luck. FYI - I personally have no problem with aspEmail working.
I just reread my post and I guess your problem is that you can't find where in wwf the sendmail function is being called. So, what I would do is look at the url right before the email gets sent. Open up that page in your editor and look for the sendmail function call.
Edited by kmacy