Well hello there.
Since in struggling with the instalation trough the .exe zipper and is not working... I wonder how can I add the game that I already purchased from the website so I can try a new download and an instaltion via the app.
Try running the game without the launcher. When I try to start the game with the itch launcher I get the same thing, it's a different number but the same basic error. Try running the game from the AvenColony.exe file. For me it's located at C:\Aven Colony\aven-colony-windows-beta. Then look for the file, I am not sure if Windows hides exe files by default or not you might have to change that setting if you can't see it. It should be the first file after 2 folders. Double click it and see if the game starts. That's the way mine runs, i just made a shortcut to it on my desktop.