I am in your same boat, Vista 64 does not fully print thru with the 1260. I have tested out my computer with Vista 64 and the document remains in the print que because it does not print not even a full page 1. Ive also just tested with my notebook which is Vista 32-bit and it prints thru perfectly from the first page to the last. I consider it could be a compatibility with Vista 64 version. Even with the newest 1.24 firmware is still hangs with my Vista 64. Hopefully a new firmware could fix this in the future.