[05:58] [TheJacket] ESPN doesn't even show those soccer games [05:58] [Akromix] dragonflies are breeding this time of year [05:58] [TheJacket] They show poker. [05:58] [Akromix] f*cking everywhere outside [05:58] [TheJacket] POKER
Someone else posted this question in another forum, I'll just copy and paste my answer to it:
EDIT---- I guess first I should say the reason why this happened...
Well, simply put...it's because you changed something in the properties of the files currently being referenced by your game. When you open up the program, it looks for those references...but they're no longer there. Examples are changing names of resources, files, maps, etc., moving files around, modifying files...the list goes on. Basically, if you're not sure if that file is already being referenced...don't touch it.
Unfortunately, this is the reason why you should ALWAYS make back ups of your game. Sadly, I'm sorry to say that your project is lost forever. However, there IS a way to save some of your work.
1. Create a new project. 2. "Explore" your old project folder and find out how many maps you had (basically find out the highest map ID#). For example, if the highest ID is "Map0117.lmu", then you know you have 117 maps. 3. Now, go back to the new project and create 117 blank maps. 4. Now copy ALL of your maps from your original project folder, then paste them into the new project folder. Of course it will ask you if you wish to "replace" existing files...simply say "yes". 5. If you made any changes to your RPG_RT.exe file, then you should copy that over as well. If you don't know what I mean, then you probably didn't make changes at all. In the latter case, I suggest you just copy and paste an RPG_RT.exe from another game. This is the icon with the picture of a sword, or a guy holding a sword.
Note: Once you've done this, chances are...you'll still get the same error message once you try to open the new project. This is when you have to copy a file called "RPG_RT.ldb" from a the default game. If you're using RM2k3, then the program most likely didn't come with its own sample game. In this case, just create ANOTHER new project, and copy the "RPG_RT.ldb" file from that. Keep in mind that the new project you created should already have it...only do this if for some reason it doesn't work the first time.
Most of your stuff will be lost, namely most (or most likely ALL) of the things you've programmed are lost...though your maps, etc. should still be intact.