I learned error 492 the hard way. You have to wipe everything when installing these roms otherwise I think the cache partition becomes corrupt.
Wipe user data. Wipe cache part. Then mounts and storage and wipe everything except SD card. Wipe dalvik. Install. After install make sure you can download from the play store. Then you can restore via titanium.
Ive run into 492 twice and followed these steps and have no problems now. Good luck
* I'd also like to add that this seems to be the fastest working revision yet. Nice job Spz0. Can you elaborate at all what core files you updated for this revision? Just out of curiosity.