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Most likely this error was caused by a custom installed module.

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Launcher: novus (1.0.0.0)
Runtime: .NET Framework 4.8.9277.0


+ Exception

Exception Information:
Type: System.InvalidOperationException
Message: Collection was modified; enumeration operation may not execute.
Stacktrace:
  1. at bool System.Collections.Generic.List<T>+Enumerator.MoveNextRare()
  2. at void TaleWorlds.CampaignSystem.Party.MobileParty.set_BesiegerCamp(BesiegerCamp value)
  3. at void TaleWorlds.CampaignSystem.Siege.BesiegerCamp.RemoveAllSiegeParties()
  4. at void WarAndAiTweaks.PartyThinkPartyPatch.Postfix(MobileParty mobileParty, ref PartyThinkParams p)
  5. at void TaleWorlds.CampaignSystem.CampaignBehaviors.AiBehaviors.AiMilitaryBehavior.AiHourlyTick_Patch2(AiMilitaryBehavior this, MobileParty mobileParty, PartyThinkParams p)
  6. at void TaleWorlds.CampaignSystem.MbEvent<T1, T2>.InvokeList(EventHandlerRec<T1, T2> list, T1 t1, T2 t2)
  7. at void TaleWorlds.CampaignSystem.CampaignEvents.AiHourlyTick(MobileParty party, PartyThinkParams partyThinkParams)
  8. at void TaleWorlds.CampaignSystem.CampaignEventDispatcher.AiHourlyTick_Patch1(CampaignEventDispatcher this, MobileParty party, PartyThinkParams partyThinkParams)
  9. at void TaleWorlds.CampaignSystem.CampaignBehaviors.AiBehaviors.AiPartyThinkBehavior.PartyHourlyAiTick(MobileParty mobileParty)
  10. at void TaleWorlds.CampaignSystem.MbEvent<T>.InvokeList(EventHandlerRec<T> list, T t)
  11. at void TaleWorlds.CampaignSystem.CampaignEvents.TickPartialHourlyAi(MobileParty party)
  12. at void TaleWorlds.CampaignSystem.CampaignEventDispatcher.TickPartialHourlyAi(MobileParty party)
  13. at void TaleWorlds.CampaignSystem.CampaignPeriodicEventManager+PeriodicTicker<T>.PeriodicTickSome(double timeUnitsElapsed)
  14. at void TaleWorlds.CampaignSystem.CampaignPeriodicEventManager.TickPartialHourlyAi()
  15. at void TaleWorlds.CampaignSystem.Campaign.Tick()
  16. at void TaleWorlds.CampaignSystem.GameState.MapState.OnMapModeTick(float dt)
  17. at void TaleWorlds.CampaignSystem.GameState.MapState.OnTick(float dt)
  18. at void TaleWorlds.Core.GameStateManager.OnTick(float dt)
  19. at void TaleWorlds.Core.Game.OnTick(float dt)
  20. at void TaleWorlds.Core.GameManagerBase.OnTick(float dt)
  21. at void TaleWorlds.MountAndBlade.Module.OnApplicationTick_Patch1(Module this, float dt)

+ Enhanced Stacktrace

+ Involved Modules and Plugins

From Highest Probability to Lowest:

+ Installed Modules

+ Assemblies

+ Harmony Patches

+ Log Files