Katie's World is already on my "to-do" list.
As for Mel's World, I ran the SV6 file used to make the scenario through the Object Fixer, and I also ran my ObjData folder through the DAT checker. Everything is working correctly on my end (both on my Windows and my Wine RCT2 games), but I re-uploaded the scenario again just to make sure.
Here's the sixth RCT scenario, Bumbly Beach!GAME EXCHANGE LINK
Bumbly Beach is changed a bit. The first difference is that the wooden roller coaster now runs two trains with six cars each as opposed to three trains with four cars each. This does not change the ride's maximum capacity, however.
The most noticeable difference is that you are unable to expand the park. Due to RCT2's restrictions on having construction rights over pathways to the park entrance (read: you can't have them at all), you are unable to connect your current land to the land that you would like to purchase.Keep those requests coming!
Next up is Adrenaline Heights from Corkscrew Follies!