Evacuate not working (DERP inflatible excape pod)

[wile1411]

In testing, I'm using 3 parts;
Mk1 Command pod (containing a Kerbal)
DERP Service ring mounted to the top node of the pod (so there is something to decouple)
DERP Pod mounted directly on top of the service ring.

I linked the DERP Pod action Evacuate to the "Gear" action group and when loaded to the launchpad, hit "g". The debug menu gives three lines upon using Evacuate:

Inflating
Evacuating!
Could not find any crew to move

Looking at the code on the SrvPack Github repository (SrvPack/Lifeboat/LifeBoat.cs) I found the line that evaluates to no crew. Not sure why.

var source = vessel.Parts.First(x => x != part
&& !x.Modules.Contains("LifeBoat")
&& x.protoModuleCrew.Count > 0);