[1.7.10] Unable to implement Minechem in a running server

[chaos234]

Hey,

I wanted to implement Minechem in our server but if I do so then the hole world is corupted becuase of a big ID change which shouldn#t appear if a mod is beeing added.

I also get the "ID out of range" error which means that I have exceeded the maximum allowed IDs for the MC-Instance but if I create a fresh new world no problems appear but we won't start in a fresh new world so what causes this ID problem? It shouln't be their as long as you don't try a world regen because the ore is missing (this has to be an option with defaults set to false to prevent world damage).

I am glad if u can help me with that because I think editing the level.dat file over an NBT-Explorer manually (adding all minechem items manually which will be the pure hell) is quite to many for that.