I just found a bug with actual tileset editor program.
When you go to the Edit Map's Tilesets window, it will give you a list of the maps in your game, along with the map ID number in front of the map name. Here's an example:
001 Overworld
002 Town 1
004 Inn
005 Shop
003 Town 2
006 Pub
When you go through the maps above, you can assign tilesets to each map. Let's assume I assign the following tilesets to each map
001 Overworld - Overworld Tileset
002 Town 1 - Town Tileset
004 Inn - Inn Tileset
005 Shop - Shop Tileset
003 Town 2 - Town Tileset
006 Pub - Inn Tileset
When I go into RPG Makes VX to create my maps, I will have access to all the right tilesets. However, when I go in to play test my game, not all the maps will be assigned the correct tilesets. When assigning tilesets to a map in the actual game, the script assigns tilesets to maps by ID number, not how they are actually ordered in your game. To use the example above, the Overworld map and Town 1 map will have the correct tilesets because their ID numbers correspond with their order in the list. The next map (Inn) is Map ID #4, but is third down on the list. What will happen in the game is that Town 2 (which had Map ID #3) will show up with tiles from the Inn Tileset because it is set to the map third down on the list. Likewise, the Inn map will have the Shop tileset in the game, and Shop will have the Town tileset in the game. The Pub will have the correct tileset because its map ID number is the same as its placement in the list.
To put it much simpler, if your maps are not placed in numeric order by their map IDs in your game, your tilesets will be all screwed up when you actually play the game.
This isn't necessarily a hard thing to do, but it makes it difficult for people like me who like to organize their maps in a Windows File Folder type format so I can find them easier, as I now have to keep the maps in the order I created them.
Anyway, I hope this helps anyone who's encountered the same problem. Other than this, I've had no problems with the script and it has helped add all sorts of dimensions to my game. I guess a fix to this problem isn't necessarily needed, but if Poccil or anyone else has a fix for it, it would be much appreciated.