Just an addition to what Skit suggested, in case you are not sure how to work in the terminal:
To get the terminal output, try to start the rolauncher executable directly from terminal (opposed to klicking it from a file explorer or shortcut - that ensures an error message will stay visible in the terminal window).
You might need to bring up the terminal first, according to google the GalliumOS terminal program is called xfce4-terminal
- you might find it somewhere in your app menu.
Since regnum installs itself into <home folder>/regnum (doesn't it?) you probably just have to do:
Code:
cd ~/regnum
chmod +x rolauncher
./rolauncher
You can just paste it in line by line, each line followed by an <Enter>
* The 1st command navigates you to the right folder, "~" is a shortcut for the homefolder of the current user.
* The 2nd command makes the program executable (maybe it already is, but even if - this doesnt hurt)
* The 3rd command launches the rolauncher program.
If there is an error, it should print it in the terminal. Paste that here, it might hint what goes wrong.
Good luck!