Knowledge Search - Results doesnt appear

Hi Friends,

I have configured Knowledge base in my system and assigned Knowledge base profile to my business role.

But when i go to knowledge base search i see blank dropdown for language.

Also when i add search term i get the warning message 'Check TREX set up'.

Trex is running fine in SM59 and compilation configuration is also done from my end.

Can you guide me where could the problem be? Any suggestions..

Thanks in Advance !

Regards,

Abhishek