Can't print to PDF or printer after FM11 update

FM12 was crashing when I tried to print a book to PDF, with "Internal Error 12004, 2175520, 21555514, 24685749". It would print to a printer.

I installed the update to 12.0.3.424 on my Windows 7 PC, and now it won't print to PDF or to a printer.

When I select File > Print Setup, nothing happens. File > Print Book and File > Print show the message "Can't find a compatible default printer. Try reconfiguring your printer setup in the control panel." I checked my printers in Control Panel, and the correct one is selected as the default.

I saved all files as FM11, and am getting the same result.

Any ideas how to fix this?