Yes, I did install Xcode12, it will not let me proceed with command
"B4iBuildserver % java -jar B4iBuildServer.jar" without Xcode 12 is running.
When I try to unzip the Project.zip, it says "unsupported format"
I don't know if it made a difference, I installed Xcode 15 first. I thought the instructions were old and it wouldn't work with Xcode 15. I installed Xcode 12 after I installed the Xcode 15.