I am running Windows 7. I can print out of Photoshop CS6 - 32 Bit Mode, but I get a crash in CS6 - 64 bit mode. I don't even get a chance to select a printer so the problem must lie within the 64 bit application.
Most of these turn out to be bugs in the printer driver software. Some drivers can't load the previously used settings correctly, and there have been a few can't even return the name of the printer/driver without crashing.
Try resetting Photoshop's preferences (to clear the last used printer settings).
Also check with the printer maker for updated drivers.
I fixed the problem Chris, thank you. CS6 somehow disappaeard from list of programs in Programs in Windows 7. So I re-installed and it showed up again. Then from the Programs menu (Talking about Control Panel > Programs), I uninstalled CS6 and then re-installed.
Printer(s) now work in 64 bit mode.