Rhubarb crashes on MacOs x86_64

[furroy]

It builds and runs fine on arm64, but our use case requires x86_64 so it will run on Intel machines as well. I edited the appInfo.cmake and added set(CMAKE_OSX_ARCHITECTURES x86_64) and rebuilt. All seems fine. Running it on the command line with no arguments works fine with the expected message, but as soon as I give it a file to process and it has to make some threads to do the work, it gets about 6% into processing and crashes. Here is the Mac IPS, Git wouldn't let me upload with the .ips extention, so I renamed it to .json

rhubarb-2024-02-26-091641_ips.json

(Note: I did also add some cmake lines to make it use our codesign, but I doubt that makes a difference)