Update: I've tested the collection on a Mac running 10.14.5. While it loaded and opened slower, I did a variety of searches and had no problem. Can you be more specific with the problems you had?
Rene Schweitzer
Classic Toy Trains/Garden Railways/Model Railroader
Hello--according to our FAQs, this software is supposed to work through Mac OS 10.12.xx. I've forwarded your question on to see if I can get an answer. Unfortunately, my machine runs 10.11, so I can't test this for you.
Is anyone having trouble getting the search program to work when using up to date Mac OS 10.14.4?
Get the Garden Railways newsletter delivered to your inbox twice a month