Problem:
Win2PDF stops working after Winfax, FaxTalk, or RightFax, or RingCentral Internet Fax is installed.

Solution:
Some fax software takes over the FILE: printer port, thereby preventing any other printer from printing to a file. This interferes with Win2PDF. If using WinFax, upgrading to WinFax Messenger Pro 6.02 will solve the problem.

Uninstalling the fax software will also resolve the problem.