so i start the game and a unity error appears for 0.1 seconds and then it doesn't start
Have you ever encountered problems like this with other Unity-based games? Can you go to C:\Users\[YOURUSER]\AppData\LocalLow\qLes\The Whispersmith (Just write %appdata% in the explorer tab, then go back with the arrow facing up and open Local Low - qLes - The Whispersmith) and see if there is a Player.log file. If there is, open it with notepad and post what's inside. Maybe also try to run the game with admin rights and maybe try Right-Click -> Problems related to compatibility (but I doubt is this).