500 Error Backburner

Hey folks,

I’m having a problem with my Backburner installation.
I installed the client and manager on the office render farm.
I open up manager and I see all the computers connected to the server,
idling waiting for a job. However when tried to submit test job get this error:

Error Submitting Job. 500 Error creating new job ‘test’

I’m using 3dsMax9 64bits SP2, Vray 1.5RC3, Buckburner 2007.0.2

Did anyone of you have similar problem? I really appreciate you help.