[kaw]

А может проблема аналогичная

I have just run into an issue while printing from a specific 32 bit application engine using 64 bit driver on Windows 7.
I have a custom driver that tries to create a printer device context using CreateDC API from a 32-bit windows process

http://www.tech-archive.net/Archive/.../msg00001.html

У нужно копаться в настройках драйвера, чтобы отключить 64bit