I'm also getting the same error when in a rover, I've just started a new save and this has just started after the recent update
"Engine error
Index out of range (-4 >= 256)
Class: 'Vehicle_WidgetHandler'
Function: 'SetWidgetDefaultColour'
Stack trace:
scripts/Entities/VehicleWidgetHandler.h:108
scripts/Entities/Controllers/Modules/VehicleHUD.h:547"