I've tried all the obvious things (at least obvious to me).
Closing down all other applications. Restarting computer. Trying in different "clean" user.
The only way I can get an image to show up in the viewer is to click on the rocket icon, turn off rocket and then turn it back on again.
Only then do I get an image... but soon afterwards the rocket becomes unresponsive, the image freezes and I get the spinning wheel of death and have to "force quit" RedCineX Pro.
Everything is current (latest snow leopard osx, latest rocket driver and firmware, latest redcine x pro).
Any ideas ? Is my rocket cooked? Don't know how it could be... i've never once taken it out of my tower and use it seldomly.