"I installed the software but it didn't run at all, after few seconds the program disappeared from screen. I installed the Mono-complete package, re-installed the Repetier package, but still no luck. I downloaded the Repetier packages from the official site, both the appimage and the installable program. Again no luck. After various attempt I installed the software via terminal and noticed that there was an alert saying that the program could not enter the /HOME/"user-name"/.mono folder. I checked it and noticed that the specified folder was owned by root (I don't know why, my mistake installing it or what?), so I changed the owner of the folder and all sub folders and file contained in it, to my "user-name" (put your account name there) and everythig worked like a charme!! I hope this can help, I don't know if the problem was caused by an error I made installing the software the first time or if it is a common issue, I report it hoping it's useful."