To use a Cheat Engine Script you download Cheat Engine and after it is installed you double click this file and attach the process to the game through the top left button that's highlighted. Once attached you check the checkbox next to "Conversation Skip" This will fill the box in and activate the mod. If it doesn't appear to be working try to play a stage first and then toggle the box on. If this also doesn't fix it then let me know in the forums.