Compressor not working

Hi everyone,

Compressor 4.6 is not working for me

I get the " unable to submit to queue" message.

I tried everything to no avail... from repairing compressor, trashing .plists , trashing settings, resetting nvram, reinstalling...

There seems to be many people with this issue all over the internet, I'm still trying to make it work. any suggestions?

Thanks in advance