I am running a 1.7.10 server with 111 different mods on it, and I keep running into the same error. I could delete the specified block in a world editor, but there are already 2 or 3 of these blocks that have shown up and if I did delete the blocks, nothing is stopping more of these blocks from showing up. Does anyone know how I can prevent this error from occurring in the future, or what mod might be causing the problem so I can remove it?
Here is the crash report