If you are banging your head because something is preventing that root or hack from working and this error pops up, maybe this can help.
I had a program called, "BlueStacks" running on my PC which is in fact an emulator that allows me to run Android Apps on my PC. However, when you are working with roots, it is a horrible program to have running in the background.
Quick Fix: Exit out of Bluestacks and start the root again. It will run smoothly now.
Also: If you have any other programs like BlueStacks that allow you to run droid apps on your pc, good idea to shut them down too.
Hope this cures for you, what was a BIG problem for me.