And in the same thread:
"However, there have been cloning failures in the past. There’s a condition called a “mindlock” where your consciousness downloads into your new clone, but you’re effectively trapped inside your own head. Think sleep paralysis, only permanent, for the rest of your life where you can hear, see, think and have all your motor functions intact, but are unable to move, speak or communicate in any way, shape or form.
Then there’s the small potential for corrupt downloads. Imagine trying to read from a jumped / corrupted hard disk, only imagine that hard disk is your brain. Typically this happens when the data doesn’t parse correctly from the received data packet to the new clone’s brain, and results in what’s known as a NJIF (Neural Jack-In Failure).""