I'm not sure if this is *exactly* the same thing, but with my Vista x86 version and running TP3 I get an incredible amount of errors stemming from the render preview and the final renderer as well. I don't remember the specific messages - the preview ones were something regarding a C library, and the final render had something to do with buckets or some such (when I get home I'll try to break it and post the messages).
Figured I'd throw this out there, even though I know it really doesn't help without specific stuff.
-edit-
But here they are! At least, some of them. These two I got from the render preview:
An unknown error occured in trBucketRender::RenderMore() ray-traced pass
An unknown error occured in trBucketRender::RenderMore() rasterized pass
...though it repeated them several times in the one error message batch.