Hi there.
Thanks for the response. It is stored on an external USB3 drive. Not the fastest in the world but render and plays fine in all other scenarios. I used to get windowserver crashes from DR9 a lot, but this is different, and is probably a beta issue, in conjunction with the retina MacBook. It is really frustrating though, as I need to finish and render a 90-minute film…
Thanks again.
– Ian