I have been running SMF (1.1 RC1) on my Web site for nearly a year.
Recently, one of our users discovered an error.
Whenever someone tries to search the forum using numbers and not letters, it returns a 500 Internal Server Error:
"The server encountered an internal error or misconfiguration and was unable to complete your request."
I've checked the site's error log and it gives this info:
Invalid query name 1
[Sat Sep 30 02:46:25 2006] [error] [client 18.104.22.168] Premature end of script headers: /dh/cgi-system/php.cgi
Numbers are an essential tool in distinguishing between various sets of Playmobil, since every set is given a unique 4 digit reference number.
So, for the forum users, being unable to search using numbers is quite a serious problem. They risk missing out on useful information or posting about a set which has already been discussed in another topic.
Any hints on how to fix this would be greatly appreciated!