Recovery after rescue bugged

[Thanny]

After fulfilling a rescue mission and landing the vessel, recovering the vessel results in no recovery screen, and the KSC scene is frozen. I have to leave and reload the game for it to function again. The behind-the-scenes part of the recovery seems to be working correctly - the contract rewards, recovered parts, and new crew member(s) are recognized. Here's a snippet from the log of my most recent such recovery:

[LOG 10:38:52.005] Awarding 53460 funds to player for contract completion

[LOG 10:38:52.006] Awarding 9 reputation to player for contract completion

[LOG 10:38:52.007] Added 7.311299 (9) reputation: 'ContractReward'.

[LOG 10:38:52.021] [Vessel Fersel's Pod]: Destroyed. No crews were aboard.

[LOG 10:38:52.024] Contract (Rescue Fersel Kerman from orbit of Kerbin.): Well done! Fersel Kerman has been recovered in one piece and is now enjoying a thorough debriefing from the comfort of his quarantine cell.

Fersel Kerman is now part of your crew roster, and may be assigned to future missions.

<b><#8BED8B>Completion Rewards:</></>

<#B4D455>£53,460 </>

<#E0D503>¡9 </>

[EXC 10:38:52.028] NullReferenceException: Object reference not set to an instance of an object

AnchoredDialog.setOpacity (Single value)

KSCVesselMarker.onInputLocksModified (FromToAction`2 inputLocks)

EventData`1[GameEvents+FromToAction`2[ControlTypes,ControlTypes]].Fire (FromToAction`2 data)

InputLockManager.SetControlLock (ControlTypes locks, System.String lockID)

MissionRecoveryDialog.Awake ()

UnityEngine.Object:Instantiate(Object)

MissionRecoveryDialog:CreateFullDialog(ProtoVessel)

VesselRecovery:OnVesselRecovered(ProtoVessel)

EventData`1:Fire(ProtoVessel)

VesselRetrieval:recoverVessel(Vessel)

VesselRetrieval:recoverVessels()

:MoveNext()

[LOG 10:38:52.032] [VesselRecovery]: Fersel's Rescue recovered At KSC. Recovery Value: 98.0%

[LOG 10:38:52.032] Crewmember Fersel Kerman is available again

[LOG 10:38:52.034] Added 0 (0) reputation: 'VesselRecovery'.

[LOG 10:38:52.037] [Research & Development]: +1 data on Recovery of a vessel returned from Kerbin orbit. +0.0 Science Added. Subject value is 0.00

[LOG 10:38:52.040] Flight State Captured

[LOG 10:38:52.044] Saving Achievements Tree...

[LOG 10:38:52.045] Saving Achievements Tree...

[LOG 10:38:52.046] Saving Achievements Tree...

[LOG 10:38:52.064] Game State Saved to saves/Thanny_1_0/persistent

At that point in the log, the KSC scene is no longer responding to input, necessitating a reload.

The mods I have installed:

Blizzy's Toolbar

Distant Objects Enhancement

Editor Extension

Enhanced NavBall

Kerbal Engineer

NavBall Docking Alignment Indicator

Precise Node

TAC Fuel Balancer

Kerbal Alarm Clock

Transfer Window Planner