No mods used of any kind. The only thing that makes the game crash is when I put the uncesor patch (mapping file) in the game folder.
When that mapping file is in the folder the game crashes 100% of the time on start up. Without the file the game runs fine as long as I have full screen optimization off.
What you could do is, place the mapping file in the game's root folder (where the key.ini file is at) and see if the game crashes again (it shouldn't, since it's basically a text file). If it does, please attach your player log here. Use the Windows + R keys and paste the following in the Run box:
%USERPROFILE%\AppData\LocalLow\Faerin Games\Mystwood Manor
Or you can use my batch file which will copy the player log to your game's folder. Extract the "player logs.bat" file in the same folder as the key.ini (should you need to post the log) and run that. Note: It will copy both your player.log and player_prev.log. I'll only need the "player.log" file.