Bug: solar panels on advanced satellite not working (NullReferenceException)

[William Woodbury]

Relevant log snippet (I think!), full log and mod list attached:

[ERR 22:39:07.717] Cannot find fx group of that name for decoupler

[ERR 22:39:07.731] Module USSolarSwitch threw during OnStart: System.NullReferenceException: Object reference not set to an instance of an object
  at UniversalStorage2.USSolarSwitch.OnStart (PartModule+StartState state) [0x0003e] in <307f1a61c0bc4f34bb904d8c8bdf5325>:0 
  at Part.ModulesOnStart () [0x00120] in <39c0323fb6b449a4aaf3465c00ed3c8d>:0 

[LOG 22:39:07.731] [Universal_Storage] USSolarSwitch.GetModuleMass, SolarCellMass: 0
[ERR 22:39:07.734] Module USSolarSwitch threw during OnStartFinished: System.NullReferenceException: Object reference not set to an instance of an object
  at UniversalStorage2.USSolarSwitch.UpdateSolarPanels () [0x00213] in <307f1a61c0bc4f34bb904d8c8bdf5325>:0 
  at UniversalStorage2.USSolarSwitch.OnStartFinished (PartModule+StartState state) [0x00118] in <307f1a61c0bc4f34bb904d8c8bdf5325>:0 
  at (wrapper dynamic-method) Part.Part.ModulesOnStartFinished_Patch1(Part)

I would guess a mod conflict, but no idea what, CKAN didn’t pick any up.

Maybe related: the antenna thing on advanced satellite also deploys as soon as it is placed in the VAB, and no button will retract it again that I can find, it just stays deployed position forever.