[IWE] Search doesn't work for a specific forum?

[Ben Tilly]

This URL gives an internal server error:

http://z.iwethey.org/forums/render/board/search/?field_searchUser=-1&field_searchSubject=&field_searchContent=whatever&field_searchSignature=&field_searchForum=%7B%27id%27%3A+%2751%27%2C+%27group%27%3A+%27Current+News%27%7D&field_boardid=1&submit_ok%3Amethod=Search

I got there by trying to search for "whatever" in the forum "Digital Rights".

(I was looking for an old database post, and got this error.)

Ben