im sorry ive been tryin to fix this issue for so many hours im like on brink of passing out hah... well im using MC 1.7.10, forge version is forge-1.7.10-10.13.1.1217-universal.. im getting the error when chunk loading.. anything else you need to know please dont hesitate to ask! thank you so much for the reply, and good luck on solving this one! my friends and I usually figure out the issues on our own everytime, and we have gotten very proficient! we have encountered so many issues with modding minecraft, its become second nature almost.. but this one... this one is a stumper man.. it doesnt give us any real reason for chunk loading issues.. it only talks about worldgen... so we tried to just start a new world and took down all of our bc machines, ic2, steam, glenns gases, liq xp.. you name it we had it.. tore it all down to put onto ME drive in a bunch of storage cells, and transfer to a new world.. and when we get there all kinds of crazy stuff happened...all of our inventory was converted into different item types.. so finally i figured out that the level.dat had all the item ids stored on it.. moved old worlds level.dat into new world and boom! the grass blocks were turned into molten silinigil(wrong spelling im sure..) and there were DNA combiners in it, and all sorts of other crazyness.. anyways its been a very long and tedious night/morning/day of trying to get some good results.. and so far nothing.. so please please help! we will be forever grateful!