Sounds like it's time to get Support/IT to fix what's wrong with your machine.

I'll offer that CAESAR II also provides issues for me - I find that the farther the CAESAR file is from my computer (i.e. stored on a network across the world), the more likely it'll hang and not fully open the piping editor prepip.exe.

But if I kill prepip.exe it usually opens the 2nd or 3rd time.

I can't offer guidance on how to make NozzlePro work for you, but is the direction you should go, since you're hitting limitations of standard modeling practice.