Requesting assist: Unity Error upon Kerbal recovery from flight or tracking station.

[Shad0wCatcher]

Hello all, first thread here. This is meant to be a feeler to see if anyone has run across an error remotely close to this before.

InvalidOperationException: Operation is not valid due to the current state of the object
  at System.Linq.Enumerable.First[RDTech] (IEnumerable`1 source, System.Func`2 predicate, Fallback fallback) [0x00000] in <filename unknown>:0 

  at System.Linq.Enumerable.First[RDTech] (IEnumerable`1 source, System.Func`2 predicate) [0x00000] in <filename unknown>:0 

  at Contracts.Templates.PartTest.Generate () [0x00000] in <filename unknown>:0 

  at Contracts.Contract.Generate (System.Type contractType, ContractPrestige difficulty, Int32 seed, State state) [0x00000] in <filename unknown>:0 

  at Contracts.ContractSystem.GenerateContract (Int32 seed, ContractPrestige difficulty, System.Type contractType) [0x00000] in <filename unknown>:0 

  at Contracts.ContractSystem.GenerateContract (System.Int32& seed, ContractPrestige difficulty) [0x00000] in <filename unknown>:0 

  at Contracts.ContractSystem.GenerateContracts (System.Int32& seed, ContractPrestige difficulty, Int32 count) [0x00000] in <filename unknown>:0 

  at Contracts.ContractSystem.RefreshContracts () [0x00000] in <filename unknown>:0 

  at Contracts.ContractSystem+.MoveNext () [0x00000] in <filename unknown>:0 

(Filename:  Line: -1)

[VesselRecovery]: Jebediah Kerman recovered 265.4Km from KSC. Recovery Value: 85.6%

(Filename: C:/BuildAgent/work/d63dfc6385190b60/artifacts/StandalonePlayerGenerated/UnityEngineDebug.cpp Line: 49)

Crewmember Jebediah Kerman is available again

(Filename: C:/BuildAgent/work/d63dfc6385190b60/artifacts/StandalonePlayerGenerated/UnityEngineDebug.cpp Line: 49)

Added 5.380251 (25) reputation: 'Jebediah Kerman was recovered!'.

That's the error being thrown. Occurs whenever I attempt to recover from either flight mode or the tracking station.

Game is heavily modded and I honestly don't know where to start. I'm leaning toward either CoherentContracts or DebRefund as possibilities but I'm unsure.

[ModuleManager] compiling list of loaded mods...
Mod DLLs found:
  Assembly-CSharp v1.0.0.0
  Modulefixer v1.0.0.0
  ModuleManager.2.2.1 v2.2.1.0
  aaa_Toolbar v1.0.0.0
  ActiveTextureManagement v1.0.0.0
  AnimatedDecouplers v1.0.5311.20395
  CritterCrawler v0.0.0.0
  BDAnimationModules v0.0.0.0
  Achievements v1.0.0.0
  DeadlyReentry v5.1.5319.31493
  DebRefund v1.0.12.31180
  DistantObject v1.0.0.0
  DMagic v0.8.2.0
  CityLights v1.0.0.0
  Clouds v1.0.0.0
  Geometry v1.0.0.0
  OverlayMgr v1.0.0.0
  Terrain v1.0.0.0
  FerramAerospaceResearch v0.14.1.1
  ferramGraph v1.3.0.0
  JsonFx v2.0.1209.2800
  ModStatistics v1.0.5311.28247
  FinePrint v1.0.0.0
  Firespitter v7.0.5320.35444
  Pump v0.0.0.0
  Hangar v1.0.5324.41060
  KSPAPIExtensions v1.6.3.0
  MechJeb2 v2.3.0.0
  RasterPropMonitor v0.17.0.0
  MechJebRPM v0.17.0.0
  KAS v1.0.5325.39758
  KerbalEngineer v1.0.3.0
  LitJson v0.7.0.0
  Wheels v1.0.0.0
  KerbalIspDifficultyScaler v1.3.4.3
  KerbalJointReinforcement v2.4.0.0
  NavUtilGUI v0.1.0.0
  NavUtilLib v1.0.0.0
  RPMHSI v1.0.0.0
  HyperEdit v1.2.4.1
  km_Gimbal_2.0 v1.0.5314.16455
  km_Lib v1.0.5314.16449
  km_Tools v1.0.5314.16449
  km_SmartParts v1.0.0.0
  km_special v0.0.0.0
  LaunchCountDown v1.7.1.36704
  MapShowNavBall v1.1.5254.4435
  NavBallTextureExport v1.0.0.0
  NearFutureElectrical v1.0.0.0
  NearFuturePropulsion v1.0.0.0
  NearFutureSolar v1.0.0.0
  FinalFrontier v1.0.0.0
  OpenResourceSystem_1_1_0 v1.1.0.0
  JumpDrive v1.0.5301.34192
  DYJlibrary v1.0.0.0
  RCSBuildAid v0.4.6.26901
  RCSBuildAidToolbar v0.4.6.26902
  RealChute v1.2.5321.29610
  RealSolarSystem v1.0.0.0
  ResGen v0.0.0.0
  ModuleResourceConverter v1.0.0.0
  Romfarer v1.0.0.0
  SCANsat v1.0.6.0
  CLSInterfaces v1.0.0.0
  ShipManifest v0.3.3.1
  SmokeScreen v0.9.0.0
  StationScience v1.0.0.0
  TextureReplacer v1.6.1.23616
  TacLifeSupport v0.9.0.0
  ModuleDB v1.0.5317.37780
  ToadicusTools v0.0.0.0
  TreeLoader v1.1.3.0
  KerbalAlarmClock v2.7.8.2
  KSPAlternateResourcePanel v2.4.3.0
  Karbonite v1.0.0.0
  KolonyTools v0.16.0.0
  USITools v1.0.0.0
  Lifeboat v0.1.2.0
  AdvancedAnimator v1.0.5205.2310
  VesselView v1.0.0.0
  VesselViewRPM v1.0.0.0
  VesselSimulator v0.0.0.0
  VOID v0.13.5328.28610
  InterstellarToolbar v1.0.0.0
  WarpPlugin v1.0.0.0
Non-DLL mods added:
  HotRockets
  SpaceplanePlus
Mods by directory (subdirs of GameData):
  000_Toolbar
  AerojetKerbodyne
  ASET
  aWolf
  B9_Aerospace
  BahaEPL
  BahaSP
  blizzy
  BoulderCo
  BrassMoustache
  CorporateFlags
  DMagic Orbital Science
  EnvironmentalVisualEnhancements
  ExsurgentEngineering
  Goodspeed
  HGR
  Hyomoto
  JSI
  KAX
  KerbalFoundries
  KerbalScienceFoundation
  Kerbaltek
  Kerb_fu
  Klockheed_Martian
  Klockheed_Martian_SmartParts
  Klockheed_Martian_Special
  kommit_nucleonics
  kommit_octotruss
  KSPRC
  KSPX
  KWRocketry
  LoadOnDemand
  Misc
  ModsByTal
  MP_Nazari
  NASAmission
  NearFutureConstruction
  NearFutureSpacecraft
  Nereid
  NohArksPnP
  NovaPunch2
  OpenResourceSystem
  PandaJagerLaboratories
  parameciumkid
  ProbiTronics
  ProceduralDynamics
  R&SCapsuledyne
  RandomParts
  ResourceConverter
  RPMEngineIgnitor
  SDHI
  SH_mods
  Squad
  ThunderAerospace
  TriggerTech
  TurboNisu
  UmbraSpaceIndustries
  US_Core
  US_KAS

That's the basic list of mods installed. I've already been through the whole rigamarole of reinstallation (had to do it when I switched over from 64 bit to 32 bit however I never checked recovery of a vessel while splashed down as I honestly don't have that much time available to test one by one; I did test one by one to see if the game loaded to flight scene and that was bad enough). All mods are their current version as of yesterday's date. A few of the large part packs have been pruned (namely B9 and Novapunch). The only thing in the kerb_fu folder is a stick from the (in development) engineering tech tree. However I am using Ackander's vertical tech tree. I can post a full list of mods if need be; as well as a full log. The game runs perfectly fine; no nullref spam; just the unity error upon kerbal recovery as well as a loader (i.e. only throws once when the game first loads) exception for exsurgentengineering (since it's ancient and probably needs rewritten/recompiled). Thanks in advance for any assistance.

Edited August 6, 2014 by Shad0wCatcher

[Master Tao]

I've seen a few errors with contracts. The best solution so far seems to be this:

• Back up your save
  
• Rebuild the contracts
  
  • Debug Menu (Alt+F12)
    
  • Contracts
    
  • Tools
    
  • Regenerate Current Contracts
    

You may lose a few contracts, but you should at least get to keep playing. If you can reproduce it with a new save and just one mod, please report that in the thread.

[Shad0wCatcher]

That was the idea Tao; to try to narrow it down so I can take it to the specific thread. Will attempt regeneration and advise further.

EDIT: Regeneration complete. Jeb was recovered however Bill is still swimming. Attempted multiple contract regenerations. Any other ideas?

Edited August 6, 2014 by Shad0wCatcher

[Shad0wCatcher]

So apologies to any moderator for the double post; though I'm not sure if/where this fix should be posted. The thread itself can be locked whenever a mod has time as I've somewhat solved the problem. However, steps to fix are a pain and aren't 100%.

1) Go to the tracking station

2) Select the problem Kerbal

3) Click the recover button

4) Notice the Kerbal hasn't been recovered (optional: curse at your monitor for this not working correctly the first time)

5) Keep the Recover/Cancel window open

6) Re-Select the Kerbal to be recovered

7) Click on the Recover button again

8) Hope the window pops up with the actual recovery statistics; if not go back to the flight scene with the Kerbal and repeat from step 1. (This is a serious PITA)