unfortunately the process com.android.settings has stopped

This is the second time I've run into this on two separate LG V10 phones. The last time i got around it by upgrading to Marshmallow which was a mistake. I've tried clearing cache, force stop of settings app, numerous restores attemps to various roms, hard reset, everything i can think of. Still the problem persists and won't let me enter the "Fingerprints & Security" section of settings. This is on 5.1.1. I'm download the 4.2G system.img which i guess is my next choice.

Any other suggestions? :confused:

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