I tried to install the game but once it finishes it gives me these error messages

Runtime Error (at 69:1358):

:



Runtime Error (at 200:800):

Invalid Opcode.



Runtime Error (at 200:807):

Out of global Vars range



Out of Global Vars range.



After that the installer tells me that the game was installed successfully and when i try to run it it doesn't work. No other files get installed...

I sometimes have similar error messages when installing Windows games via WINE, but those games work eventually.

Does the directory, where you install »Stardew Valley« to, look complete? Do you start the game via Galaxy or from within its directory? Have you tried starting it via a terminal? What are the error messages the terminal shows you?

Edit: Have you seen this thread and tried the described procedure? It might help.
gog(dot)com/forum/stardew_valley/game_not_starting_i_have_a_solution