found your solution
its either you have a older version of plutonium.exe which by going to the website you can simply fix
or it is that you don't have potential files on your computer
recommend doing windows key + r
%Localappdata%Plutonium
and get rid of it entirely
and then just reinstall it and try again
idk if this advice helped
Whoever thinks i am a bot i do sound like one but nah
hope i helped
(if that doesn't work just uninstall the launcher and reinstall)
(and i upvoted alot of your posts so you can get 1-2 reputation and do some more useful stuff)
