Weird Error "Entity Already Tracked"

[cdh0127]

I keep getting this error repeatedly....about every 30 seconds, sometimes less. I have no idea why. I thought it might have been a chunk loader, but removed it and the error still occurred.

I really have no idea...the error itself does not give much info (that I can read, at least).

 

List of Mods installed:      http://pastebin.com/nktyZt4L
Hopefully someone has a solution to this, because I imagine the continuous recurring errors can't be helpful with lag.