Running a GMod server on a dedicated host, but server not loading

This image shows the console

I believe that it is caused by a missing file whistle trying to load, if anyone knows what that would be that would be handy

[editline]9th November 2014[/editline]

Reinstall steamcmd and app_update gmod again

cant remember how to do either of those
Well thanks for the support :smiley: