Dear Drew and WeatherCat troubleshooters,
Things were perfect until I moved up to Sonoma.
So what version of MacOS were you running previously? Was it an earlier version of Sonoma or was it Ventura?
I had followed the directions in the previous posts yesterday and did get things working but I did a little experiment today and quit WC and .... again, it wouldn't open or quickly crashed during multiple attempts to launch it.
So I followed the directions once again and WC crashed multiple times when I attempted to start the program ... sometimes immediately when it opened or sometimes it crashed after it did the back up procedure. I finally have it open and working but based on my recent experience I suspect I'll have a dead program if I quit WC or restart the computer. I reinstalled the WC program too but that didn't seem to make a difference and I probably ran through the deleting of the preference file 5 or 6 times before it started working.
Alas, your problems sound like the preference file is getting corrupted before WeatherCat can get started. Have you tried boot in "safe mode?" Here is Apple's documentation on the topic.
https://support.apple.com/guide/mac-help/start-up-your-mac-in-safe-mode-mh21245/macIf you have a second system that you can boot from, that would be even more certain to eliminate any sort of preference file caching issues.
Sorry, that I don't have anything else more constructive to suggest. Can folks running Sonoma chime in with more timely suggestions since they are running the same version of MacOS?
Edouard