Problem with a mod in the server

Hi, we are playing in a 1.7.10 server of minecraft, we can play well with all the mods and all of that, but the problems come when form the nowere the server crashes for the mod "MapMakingTools". The world gets corrupted and the server crashes for it. If i remove the mod, the server can start well, and same if I download the world and play it in singleplayer. But why can we play well with the mod, but passed a time the world gets corrupted? I also tried to remove the mod, start the world, and reinstaled it, and it doesn't work. One of the solutions is to create a new world, but, you know, all the work going to the trash is not a option, and if we do that, in some time we will have the same problem, the other solution is to remove the mod, but it's an important one, so, is there another solution?

https://mclo.gs/BnyEvAz

How can I solve that?