A problem that is bad and seems to be getting worse - exporting to MPEG2, MP4, or M2V (DVD) always leads to a crash and the dreaded blue screen. Exporting to other formats is generally okay, but being able to use the above three is extremely important. The crash occurs whether using direct "export" or "queue" ... on CBR, VBR, one-pass, two-pass, with or without "use previews," with or without "use maximum render quality." It sometimes happens deep into the export, at other times just as the export is beginning. I have monitored the core temps during export and they seem reasonable, rarely getting above 70 C. In this case I am exporting standard definition, but the same thing happens with HDV.
Premiere Pro 6.0.3, Media Encoder 126.96.36.199, Windows 7 Professional 64-bit with Service Pack 1, 16 GB RAM, Intel Core i7-3930K 3.20GHz, overclocked (I believe.) NVIDIA GeForce GTX 680 with a recently-updated driver (this also occurred with the previous driver) The system was assembled by a very smart computer guy; unfortunately, he is not an Adobe expert and is a couple of hours away. His initial thoughts were temperature, but that seems to not be an issue.
I would re-install Media Encoder, but it seems an embedded part of Premiere Pro CS6. And I'll certainly re-install PP if that might help, or perhaps can revert to an earlier version of Media Encoder. Before going to those steps, I wonder whether anyone else has run into a similar issues and might have a suggestion. Thanks very much.
Either my computer maker is a genius or I've been getting very lucky. He had me go into BIOS and turn up one voltage parameter by some small amount ... encoding has gone very smoothly since then. Definitely hardware.