OK, I was able to get it to work. I opened Terminal and typed:
which was the installation folder I created.
Then I typed:
java -jar bin/felix.jar
This opened the app. I created a default ticket and printed it. It prints fine. I'm using an HP Officejet Pro 8500 printer.
Before I posted, I went to the TicketMaker folder and double clicked felix.jar. Nothing started. Clicking on the other .jar files caused an error message to come up as expected.
There has got to be an easier way to open/run this app.
I was a tester for the Excel version of Ticket Maker and added the necessary code for it to work in Excel on a Mac (vba is slightly different). However, I do not know anything about Java. I am willing to beta test any changes to this Ticket Maker on a Mac - just let me know.
In the meantime, is there a better way to start the app?
BTW, this is very impressive. Thanks for the hard work.