http://bugs.winehq.org/show_bug.cgi?id=14798
--- Comment #4 from Hew hewus.owns@gmail.com 2008-08-09 00:04:41 --- Verification appears early on in the process. The exact procedure to reproduce is:
next; fill in details and next; next x4; fill in details and next; next; yes (first error appears from output; next (popup appears); ok (second error appears, etax is blank).
Hope this helps!