Well I've decided to try using the -hosts command, but with limited success. It will render, but it won't set up a slave rendering (or what MI likes to call "Parallelism"). Each cpu seems to be the master of a frame, and renders it all by it's lonesome. I get the following messages: MSG 0.0 info : connecting host render-01:7054 MSG 0.0 info : connecting host render-02:7054 MSG 0.0 info : connecting host render-06:7054 MSG 0.0 info : connecting host render-09:7054 MSG 0.0 info : connecting host c:/temp/mRay6.0001.mi MSG 0.0 error 011226: mi_msg_connect: failed to parse hostname:port from c:/temp/mRay6.0001.mi MSG 0.0 error 011701: cannot connect host c:/temp/mRay6.0001.mi JOB 0.0 info : started threads 0,1 on render-01 now known as host 1 JOB 0.0 info : started threads 0,1 on render-02 now known as host 2 JOB 0.0 info : started threads 0,1 on render-06 now known as host 3 JOB 0.0 info : started threads 0,1 on render-09 now known as host 4 Does anyone know what this means, and what I might be able to do to get around it? Thanks a bunch, -dann