[Scenario Editor Freezes Explained?]

I have found the bug issues and I'll show you how I fix this.

 

(I said scenery by mistake. I meant to say scenario.)

 

Sorry if you're unable to view. I'll put it up on YouTube.

 

Here it is. 

 

[Game Freezes!]

Let's say that I want to release my wip showcase pics. So when I click move to a next page, it freezes and I don't know how it happened! It wasn't supposed to freeze. It took me 5 hours to search some appropriate scenery to build my first park as my project! It took me 1.5 hours to work on this scenario! What's going on?