Strong Sign Error With Dev build

Getting This error after getting the latest dev build needed for UWP application, my old app stop building giving this

`Severity Code Description Project File Line Suppression State
Error Assembly ‘C:\Program Files (x86)\MonoGame\v3.0\Assemblies\Windows8\MonoGame.Framework.dll’ must be strong signed in order to be marked as a prerequisite. Pick and Pile.Windows

Plz give me an in depth (add these lines to xxxx file etc) how to fix this, please nobody say clean project or delete obj’s etc, it’s nothing to do with that, it’s a inside an xml file somewhere i just don’t remember where.

Many thx in advance team, great job