Hi,

Game was working fine a few days ago. Now it gives the following error message on start:

[22:26:31 INFO SMAPI] SMAPI 2.1 with Stardew Valley 1.2.33 on Microsoft Windows 8.1 [22:26:31 DEBUG SMAPI] Mods go here: N:\SteamLibrary\steamapps\common\Stardew Valley\Mods [22:26:31 TRACE SMAPI] Log started at 2017-11-12T03:26:31 UTC [22:26:31 TRACE SMAPI] Overriding content manager... [22:26:31 TRACE SMAPI] Starting game... [22:26:31 ERROR SMAPI] The game failed unexpectedly: System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. at Microsoft.Xna.Framework.Graphics.EffectPass..ctor(ID3DXBaseEffect* parent, EffectTechnique technique, SByte* Pass, Int32 index) at Microsoft.Xna.Framework.Graphics.EffectPassCollection..ctor(ID3DXBaseEffect* parent, EffectTechnique technique, Int32 count) at Microsoft.Xna.Framework.Graphics.EffectTechnique..ctor(ID3DXBaseEffect* parent, Effect effect, SByte* technique) at Microsoft.Xna.Framework.Graphics.EffectTechniqueCollection..ctor(ID3DXBaseEffect* parent, Effect effect, Int32 count) at Microsoft.Xna.Framework.Graphics.Effect.InitializeHelpers() at Microsoft.Xna.Framework.Graphics.Effect.CreateEffectFromCode(GraphicsDevice graphicsDevice, Byte[] effectCode) at Microsoft.Xna.Framework.Graphics.Effect..ctor(GraphicsDevice graphicsDevice, Byte[] effectCode) at Microsoft.Xna.Framework.Graphics.SpriteBatch..ctor(GraphicsDevice graphicsDevice) at xTile.Display.XnaDisplayDevice..ctor(ContentManager contentManager, GraphicsDevice graphicsDevice) at StardewValley.Game1.Initialize() at Microsoft.Xna.Framework.Game.RunGame(Boolean useBlockingRun) at Microsoft.Xna.Framework.Game.Run() at StardewModdingAPI.Program.RunInteractively() in C:\source\_Stardew\SMAPI\src\SMAPI\Program.cs:line 226 [22:26:31 INFO SMAPI] Game has ended. Press any key to exit.
I tried with and without mods and still get the same.

Any help is welcome

@Sulfurous Here's the important part:

AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

Try performing a memory test to check for issues with your computer's RAM. If it finds errors, you may need to replace the RAM. If no errors are found, post a message in the SMAPI support thread with the same info you posted above, and mention the memory test results.