If after following the 4th suggestion you’ve clicked install on the mode you’re trying to play and made sure the selected game path in the Plutonium launcher is correct, then you should no longer face the problem assuming you’ve done everything correctly. All I can help with at this point is to tell you to either redo the 4 suggestions or send screenshots for me to check if you’ve done the suggestions correctly. If you’d like for me to check for you, then show pictures of the 2 paths mentioned in suggestion 3 (hide the "token" from config.json when taking the screenshot) and also show the contents of the game folder.