I have no lotus , but I would:
I would close the lotus , select another printer different default to the laserjet 3700.
Put Pmpdf as default, or other printer.
Open again Lotus and file.
If now is ok, Take a picture of your printer 3700, Font manager, if you have any font, and send it.
If no is ok,I do not know what could be the problem.
Saludos