Ever hit the "Save Map" button and get a weird error about something called ".lmu?" Have you ever had to restart your project because you get the dreaded "Map Tree Break" error? Ever wanted to know how to beat it? Well, I have, and now I'm going to share with you the secret.
First of all, the FIRST thing you should always do BEFORE something like this happens is to back up your game/files. This will keep you from having to do too much work. If you don't have a backup, then you'll have a lot of work in front of you.
TERMOLOGY
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RPG_RT.lmt - This is what gets corrupted in a "Map Tree Break" error. All it is is a complier that reads all the map data and translates it for the game and the program.
MAP####.lmu - This is what contains all the map data. It contains the layout, the Map Properties, and all events.
RPG_RT.ldb - This is the Database file. Normally, you don't have to do anything with this file, but if you have a huge database and you're not sure if fixing the map tree's going to work, at least you still have everything from the Database.
STEPS
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1. Create a new project. It doesn't matter what it's named, just create it. All we're going to use it for is the clean RPG_RT.lmt file, and as a place to store the RPG_RT.ldb if we need to.
2. This step is VERY VERY IMPORTANT. Create a new folder someplace safe, and copy ALL of your MAP####.lmu files into that folder. Why? Because when you create a new map in your game, it OVERWRITES the original, and we DON'T want that to happen.
3. Copy the RPG_RT.lmt file from the new project into the corrupted one and overwrite the original.
4. Now, if you have A LOT of maps, this is going to make your day. Go into your project, and then create new maps till you get to one that says "Map ID: ####" (#### being the number of your last .lmu file). The genius of this is that since the .lmt is just a complier, it doesn't know the difference between the maps; it just knows how many there are.
5. Close out of RM2k/3 and then copy all the maps you stored safely away into your project folder and overwrite the ones in there. When you open your project back up, all the maps will be there, at least what they look like and the events on them.
6. This is another fun part. Since you have your events and maps back, but they're all in the wrong order and aren't named. Now you have to name your maps again and place them in their original positions. Once that is accomplished, your project is back to its original state when you hit the "Save Map" button, and got the error.
I hope this helps everyone, 'cause this error is the #1 leading cause of RM projects being dropped. Now, get back to your deserted games and fix 'em!
