Hi, I'm having the same problem it seems regarding the large comp not rendering and getting stuck at "Pre-flighting render items. Render items to check: 1". Also for me, this comp seems corrupted. I can edit everything inside the comp fine, but trying to precompose it or copy the layers into a new comp crashes AE. Same for you?
Did you find a solution? I'm thinking about pre-rendering the layers inside, but would prefer to avoid doing so. Thanks!
Adobe CS 4; 18.104.22.168
OS X 10.6.8
Comp settings, 1280x630, 30fps
render settings: pro res 422
computer: 2 x 2.8 ghz quad core intel mac / 10GB ram