http://www.isfdb.org/cgi-bin/edit/tp_search.cgi?TERM_1=CHAPBOOK&USE_1=ttype&OPERATOR_1=AND&TERM_2=%20&USE_2=title_language results in a Python error. According to Uzume's post on http://www.isfdb.org/wiki/index.php/ISFDB:Moderator_noticeboard:
I was trying to search for cases where the language was unset but it would not let me so I tried a single space and then got the crash. Then I manually rebuilt the query using GET instead of POST (...) so I could more easily post it here.
Anonymous
Fixed in biblio/adv_search_results.py 1.7. Installed in r2016-040 on 2016-02-28. Closing.