I currently have Win2PDF. I'm running Pro/E 2001. When I initially purchased Win2PDF, it worked well. Sometimes it would make Pro crash, but not always. After I installed the latest build of Pro (2002310) it stopped working all together. It crashes EVERY time now. I emailed the company and they said they were aware of the problem but do not have a seat of Pro/E to test it on. End of story...
Other than Pro/E it works great and was a bargan at only $35.
Sorry, I can't say whether it will work with Wildfire or not.