I can't believe I didn't think of this. Well played.
Works does it? Fear mongering is it:
14:53:05: Medieval Dynasty, Alpha 0.1.0.3 (STEAM)
14:54:00: Failed attaching to process (Win32 error code: 0x12B). Please check out the trainer notes to see if there are any special instructions.
Are you sure Steam updated your game?
Im having no issues. The 1.06 update was only 256mb or so..