in my case after having mastered almost the whole castle i had to go back to the 2nd screen (the one after the bridge which is the first screen) and could not enter the scene at the bottom of the tree right from the fountain. Stuck --> Game deleted
Chose the "advanced"-mode and almost needed ten minutes to finish the first ghost, always failed to get the flashlight when necessary, then suddenly (although skip was disabled) a window popped up "Skip Yes/No" --> I quit and deleted this "game".
Game is VERY slow, although I have a rather new machine. Did not really like the graphics. HOPs are boring and partially really tiny items, so I had more the feeling of pixelhunting instead of playing a HOP. Sometimes inprecise in collecting items when clicking them.