not sure if you ever got your answer, but we use enterprise and are having the same issue.  I replied to another thread asking if you had figured out a way to get it to work without having to batch.  We also do NOT file electronically, so we are able to maually fill out the W-3 once we run the batches and submit via mail.  I'm afraid this year we are pushing the 250 mark and may have to file electronically, so keep an eye on this thread to see if anyone has been successful...