I just finished PC game on windows 10 using the patches provided on here and the end video didn't play. It went straight to the credits after he walked off searching for Daisy. Is it something about the patches that prevented it?

As far as I know its not a problem with the patch but with the game its self. I have only heard of the pc version working with cutscenes once. if you just wanted to watch them they are in the files of the game and you can watch it with most video applications.

Back on my Win7 setup FMVs would play without having to mess with anything, but after upgrading to a Win10 machine they stopped playing until I turned on Windows XP (SP3) compatibility mode for Donald.exe