New errors sending settings to F5X+ also crashing simulator

So, I have received a few reports that that EuroPilotPlus can no longer send settings to the Fenix 5X Plus.

Essentially users are reporting that nothing happens when saving the settings, when previously it would update the settings right away. I can't reproduce this issue on my Fenix 5X, and I don't have a F5X+.

I checked the simulator and though I haven't changed any code in the past several months, the simulator is now crashing when changing settings (such as the background color). In some cases I am getting the following in the console:

Unhandled Exception
UnexpectedTypeException: Expected Number/Float/Boolean/Long/Double, given null

In other case, the simulator simply stops responding (freezes).

Has something material changed in the recent SDK releases that would require adjustments to code?

Currently using:

SDK 3.0.3
Eclipse Version: Oxygen.3a Release (4.7.3a)
Build id: 20180405-1200