www.dl2rum.de

I set it up a while back trying to get fldigi working for RTTY but never got it working. I turn it off but it still crashes.

Can you check Console app if there are more crash logs available from the latest RUMlog test version?
The mentioned option sends dx spots to fldigi. I don't know what fldigi is doing with them.

In the test app, DxLabServer started on launch even with it disabled. Attaching the crash log

Hard to track.
Please try this: https://dl2rum.de/RUMlogNG/RUMlogNG_Test.zip and report back.
Does it really crash always after a minute? Pse post a screenshot of the dx-cluster terminal window after the crash.

Delted previous test, opened new one. Ran for 45 seconds and crashed. Attached is the Crash log and below is screenshot before it crashed on the window.
If I delete the app and install it again, will it retain all my settings or do I need to recreate them? I know my logs are safe and I have a backup as well.

Out of curiosity, has anything changed in how the data is parsed from the clusters? Comparing the crash logs, my son noticed the crashes seem to occur when parsing what looks like what could be the data from the cluster.

Deleting the app is useless. When you start the test app, it's a new installation. An option could be to delete the whole RUMlog data container. Then you will lose all settings. This is like a clear install. But I have one idea more, but it will become hard.
Please try this: https://dl2rum.de/RUMlogNG/RUMlogNG_Test.zip and monitor the Network Status window. After the crash I need the content of the window.

I'm not sure if you can copy & paste the text after a crash. A screen shot is sufficient, but I need the latest (most lower) part. Make the window taller.

Since you are still the only one with this problem, we should swap to a more private conservation. You can contact me via e-mail.

Finally fixed. It seems the problem was a failure in the file system. Deleting sandbox container ~/Library/Containers/de.dl2rum.RUMlogNG solved the problem.