I've been using it, and it seems to be fairly stable... What I found out is that one of my renderboxes is acting flakey (it's the temperamental one, so I shouldn't be surprised), and it was what caused my Vue Pro to bomb. I did a 595 frame render today with 4 of the 5 cows running. What you may want to try is to start your animation render with just the rendercow on the system with Vue on it. Once it is doing frame 0, then add the next box, and wait until that one is rendering a frame to add another one, etc. The HyperVue manager is touchy, and with Vue Pro is seems to be even touchier to things like packet collision. That seems to be the problem when you try and start all the Cows at the same time. The main Cow seems fine, as the textures are already on the local drive, but shoving the textures across a network to multiple cows simultaneously does seem to lead to 'kaboom'. Letting each Cow get set up with the resources before activating another one seems to be the workaround.