SMAPI ERROR PLEASE HELP !!

Ive been trying for absolute days now to figure out how to install mods on Stardew Valley. I have the 1.3.3 version and ive downloaded SMAPI 2.6 beta which should be the correct version. Every time i try to open StardewModdingAPI.exe it shows this on a black screen


Unhandled Exception: System.IO.FileNotFoundException: Could not load file or assembly 'StardewModdingAPI.Toolkit.CoreInterfaces, Version=2.6.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.
at StardewModdingAPI.Program.AssertMinimumCompatibility()
at StardewModdingAPI.Program.Main(String[] args)

I literally have no idea what to do anymore. When I downloaded the game there was no mods folder so i made one, put the mods in and it didnt work. Ive tried uninstalling SMAPI numerous times and ive looked everywhere for help, please, someone help me for the love of god all i wanna do is play this game with mods !!!

 

You also posted in the modding section, so I'll help you there.