Can you give us more details on your Assets, your Project/Sequence Preset, and then your systems?
Also, can you post screen-caps of the Export dialog screens, showing the Export settings?
Sorry it's taken a bit to get back with you... I've been busy on another system. My assets are R3D files at 4k resolution under the Red 1080p preset. I have a Core2Duo with 8GB RAM, 2TB HDD, Running Windows 7 Pro 64bit and CS4 Production Premium. What other system specifics do you require?
I do have a Matrox RTX2 card; and did not uninstall and reinstall it when I uninstalled and reinstalled my CS4 software.
As for Export:
Have you considered the fact that you try to haul over 180 tons of stuff using a hand cart?
That laptop is way underpowered. It may be good enough for DV, barely adequeate for HDV, underpowered for AVCHD, but completely out of its league for Red 4 K material. Good luck with your hand cart.
Really, that is not helpful, and a possible status marker on humanity... you can cut the cynicism with a knife. I'm unable to render from even DV footage, but perhaps you'd know that if you had asked and not assumed and discounted my question. And, I have no issue with red footage. It's real time editing, but not rendering for effects (as one would expect). I'm just asking for actual help, not to be slammed since I don't have a high end machine anymore.
I have just uninstalled and reinstalled the Matrox drivers. I do have Matrox AVI file creation capability, just not Microsoft... I need to be able to use uncompressed output, and was able to prior to my removal of the CS4 software last time.