I have deinstalled newer versions of ubuntu, because they would not load different appimage versions of RT. Finally i found the solution. Newer ubuntus need a library called libfuse2 to start appimages. you will find a description of installation by a search in the internet (at your own risk). with ubuntu 24.04 it is a similiar but different libfuse, you will find out but i have not tried it. i write this to save your time as i wasted mine.
(I posted this here first:
but i wanted it to be in the RT categorie and it seems i cant change that.)
We’ve recently had a large wave of spam and need to disallow new accounts from editing posts, sorry. If you post here a bit, you’ll gain trust level and will eventually be able to edit posts.