Friends, I tried these two solutions:
http://groups.google.com/group/web2py/browse_thread/thread/2f7465d678f24949/eaa0a076fcbded09?lnk=gst&q=conditional+is_in_db#eaa0a076fcbded09 http://groups.google.com/group/web2py/browse_thread/thread/8b69f3919c0d25c9/d44394e0527d3a74?lnk=gst&q=conditional+is_in_db#d44394e0527d3a74 but getting the same error. Any idea ?