So... I started a new play through, going the Minuteman route this time so I have Conqueror uninstalled and SS updated to 4.1.3. Ran into a couple of minor bugs. One I nearly lost Abernathy Farms due to the "Beds: 4096" bug that still seems to be kicking about, their happiness plummeted to 13% before I got back over there to Reset Plots to fix that. The other is I was making a bunch of Assaultrons (I just finished up Automatons DLC so I had access to the robot workbench) to do the supply routes from Greygarden to my other settlements (a central spoke layout). Just finished making Assaultron suppliers for Abernaty, County Crossing, Sanctuary, Sunshine Tidings, Ten Pines, and The Castle. I made one more titled "RedRocketToGreyGarden" when SS decided to fight me. SS auto assigned the new Assaultron to Defense. I selected it while I was in Settlement Building mode, hit "Q", picked Red Rocket, moused away, moused back and it was "Unassigned" , I repeated this several times with no luck on getting it to be a Supplier for Red Rocket to Greygarden. I finally dashed off to Red Rocket and made a new Assaultron and from there it worked fine, it went about it's merry way between Red Rocket and Greygarden. Kinda annoying, wanted all the suppliers to be from Greygarden so only one settlement is restricted to a max of 50% happiness due to having a robot / synth 'settler' .