CTD on contract parameter completion?

[MaxwellsDemon]

A lot of entries look this:

[ERR 16:34:15.026] Input is null for field 'agent' in config node 'CONTRACT_FINISHED'
  at System.Environment.get_StackTrace () [0x00000] in <ad04dee02e7e4a85a1299c7ee81c79f6>:0 
  at ConfigNode.AddValue (System.String name, System.String value) [0x00000] in <9d71e4043e394d78a6cf9193ad011698>:0 
  at Contracts.Contract.Save (ConfigNode node) [0x00000] in <9d71e4043e394d78a6cf9193ad011698>:0 
  at Contracts.ContractSystem.OnSave (ConfigNode gameNode) [0x00000] in <9d71e4043e394d78a6cf9193ad011698>:0 
  at ScenarioModule.Save (ConfigNode node) [0x00000] in <9d71e4043e394d78a6cf9193ad011698>:0 
  at ProtoScenarioModule..ctor (ScenarioModule module) [0x00000] in <9d71e4043e394d78a6cf9193ad011698>:0 
  at ScenarioRunner.UpdateModules () [0x00000] in <9d71e4043e394d78a6cf9193ad011698>:0 
  at ScenarioRunner.GetUpdatedProtoModules () [0x00000] in <9d71e4043e394d78a6cf9193ad011698>:0 
  at Game.Updated (GameScenes startSceneOverride) [0x00000] in <9d71e4043e394d78a6cf9193ad011698>:0 
  at Game.Updated () [0x00000] in <9d71e4043e394d78a6cf9193ad011698>:0 
  at QuickSaveLoad.doSave (System.String filename, System.String screenMsg) [0x00000] in <9d71e4043e394d78a6cf9193ad011698>:0 
  at QuickSaveLoad.quickSave (System.Boolean saveAs) [0x00000] in <9d71e4043e394d78a6cf9193ad011698>:0 
  at QuickSaveLoad.Update () [0x00000] in <9d71e4043e394d78a6cf9193ad011698>:0 

 

>:0    <--- very appropriate!

Eek.. and after restarting post CTD, it's not recognizing my career game.  (!)   Hoping to roll back to a previous quicksave.

[MaxwellsDemon]

>> Whew <<   Deleting persistent.loadmeta and persistent.sfs and renaming quicksave.loadmeta and quicksave.sfs to "persistent" allowed me to recover my campaign.  Weird.