Hi,
I'd recommend having a look at the "Secret" preferences before you render.
Hold down the Shift key, then go to Edit > Preferences > General. Once in Preferences, hit the Previous button and you'll find the Secret area.
Turn on Disable Layer Cache, and set the Purge to 30 frames. This will increase the chances of your render completing, but it will take a little longer to do it. A fair trade I think. :o)
Remember to reset these settings after you're finished.
Hope that helps,
Ben
Curious Turtle Professional Video
Training | Editing |Support
www.curiousturtle.com