android.process.acore has stopped
In short, never ever back up system apps and settings from one handset and restore to another, that is exactly what happens! :) 

Mismatches with system app's key signature conflicts with another's ROM's key signature, and variants of settings as well may not exist on the other, all of those can lead to breakages such as what the OP is experiencing. 

The only way to get that back, is to perform a factory reset to restore everything back to its original state.