Good to hear that you are making progress. If the render cow says "done" even though its not, it usually means that it somehow lost connection to hypervue. Happens sometime, even though my setup with 1-5 cows is pretty stable in Win7 with Vue 8 and 9.

Regarding the single frame: I haven't tried that yet. But my guess would be that for an animation render you need to specify more than 1 frame.

Ciao

TD