Thread:Extension talk:SphinxSearch/search in command line ok - in browser no results/reply

I am trying to debug to find the problem. I use wfDebug and getLastError and it shows the following error inside the Query function: Getting last error: index test1,test1stemmed: no such filter attribute 'page_namespace' However the sql query in sphinx.conf considers page_namespace. Has anyone experienced a similar problem? Any idea is welcome. Thanks, Adam