Siril 1.4.4 plate solve crashes in Ubuntu 26.0.4.1

When I try a plate solve, Siril 1.4.4 running under Ubuntu 26.0.4.1 the program crashes. This is different from Siril 1.4.4 under Windows.
Any idea?
Thanks
Karl

With no more information… No.
Backtraces are needed

Where do I find backtraces?

https://siril.readthedocs.io/en/stable/Issues.html#send-us-useful-information

siril > output.log 2>&1 does not work. I downloaded Siril 1.4.4 as an AppImage and start it from the download folder. It is stored there as Siril-1.4.4-x86_64.AppImage. In the file folder the app is started with a doouble click. I have so far not found a way to start it from a terminal and therefore no chance redirecting the output to a file. How do I proceed in this case?

These are the rights for the Siril AppImage.

Well, it works like all other binaries in Linux (Quickstart — AppImage documentation)

And why don’t you use the PPA repository? Always better on Ubuntu.