component DemoComponent
2024-06-01 16:28:59.969 - Thread: 14 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/70mmBurstMag" is missing.
2024-06-01 16:28:59.969 - Thread: 12 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/AWESabreMissileMagDef" is missing.
2024-06-01 16:28:59.969 - Thread: 14 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/70mmBurstMag" is missing.
2024-06-01 16:28:59.969 - Thread: 12 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/AWESabreMissileMagDef" is missing.
2024-06-01 16:28:59.969 - Thread: 11 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/AWESabreMissileMagDef" is missing.
2024-06-01 16:28:59.969 - Thread: 11 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/AWESabreMissileMagDef" is missing.
2024-06-01 16:28:59.970 - Thread: 1 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/54mmAmmoMagazine" is missing.
2024-06-01 16:28:59.970 - Thread: 1 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/54mmAmmoMagazine" is missing.
2024-06-01 16:28:59.974 - Thread: 15 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/70mmBurstMag" is missing.
2024-06-01 16:28:59.974 - Thread: 15 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/70mmBurstMag" is missing.
2024-06-01 16:28:59.974 - Thread: 12 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/70mmBurstMag" is missing.
2024-06-01 16:28:59.974 - Thread: 12 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/70mmBurstMag" is missing.
2024-06-01 16:28:59.974 - Thread: 15 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/70mmBurstMag" is missing.
2024-06-01 16:28:59.974 - Thread: 12 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/70mmBurstMag" is missing.
2024-06-01 16:28:59.974 - Thread: 15 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/70mmBurstMag" is missing.
2024-06-01 16:28:59.974 - Thread: 12 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/70mmBurstMag" is missing.
2024-06-01 16:28:59.974 - Thread: 15 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/70mmBurstMag" is missing.
2024-06-01 16:28:59.974 - Thread: 15 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/70mmBurstMag" is missing.
2024-06-01 16:28:59.977 - Thread: 12 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/70mmBurstMag" is missing.
2024-06-01 16:28:59.977 - Thread: 12 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/70mmBurstMag" is missing.
2024-06-01 16:28:59.977 - Thread: 12 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/84mmFlechetteMissileMagDef" is missing.
2024-06-01 16:28:59.977 - Thread: 12 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/84mmFlechetteMissileMagDef" is missing.
2024-06-01 16:28:59.977 - Thread: 11 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/AWESabreMissileMagDef" is missing.
2024-06-01 16:28:59.977 - Thread: 15 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/70mmBurstMag" is missing.
2024-06-01 16:28:59.977 - Thread: 14 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/84mmFlechetteMissileMagDef" is missing.
2024-06-01 16:28:59.977 - Thread: 12 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/AWESabreMissileMagDef" is missing.
2024-06-01 16:28:59.977 - Thread: 11 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/AWESabreMissileMagDef" is missing.
2024-06-01 16:28:59.977 - Thread: 15 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/70mmBurstMag" is missing.
2024-06-01 16:28:59.977 - Thread: 14 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/84mmFlechetteMissileMagDef" is missing.
2024-06-01 16:28:59.977 - Thread: 12 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/AWESabreMissileMagDef" is missing.
2024-06-01 16:28:59.977 - Thread: 11 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/70mmBurstMag" is missing.
2024-06-01 16:28:59.977 - Thread: 11 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/70mmBurstMag" is missing.
2024-06-01 16:28:59.977 - Thread: 12 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/84mmFlechetteMissileMagDef" is missing.
2024-06-01 16:28:59.977 - Thread: 12 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/84mmFlechetteMissileMagDef" is missing.
2024-06-01 16:28:59.977 - Thread: 12 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/AWESabreMissileMagDef" is missing.
2024-06-01 16:28:59.977 - Thread: 12 -> Critical: Definition of "MyObjectBuilder_AmmoMagazine/AWESabreMissileMagDef" is missing.
2024-06-01 16:28:59.987 - Thread: 13 -> ERROR Entity init!: System.ArgumentException: An item with the same key has already been added.
at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource)
at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add)
at VRage.Collections.MyConcurrentDictionary`2.Add(TKey key, TValue value)
at VRage.Game.MyDefinitionId.ToStringCached()
at Sandbox.Definitions.MyDefinitionManager.GetPhysicalItemDefinition(MyDefinitionId id)
at Sandbox.Game.Entities.MyFloatingObject.InitInternal()
at Sandbox.Game.Entities.MyFloatingObject.Init(MyObjectBuilder_EntityBase objectBuilder)
at Sandbox.Game.Entities.MyEntities.InitEntity(MyObjectBuilder_EntityBase objectBuilder, MyEntity& entity, Boolean tolerateBlacklistedPlanets)
2024-06-01 16:29:01.897 - Thread: 15 -> Initialized large grid [TTC] Marauder Corvette 17537 PCU
2024-06-01 16:29:01.957 - Thread: 12 -> Initialized large grid [UESC] Gladius - Escort Frigate 12275 PCU
2024-06-01 16:29:02.135 - Thread: 11 -> Initialized large grid [UESC] Starship - Regulus 10710 PCU
2024-06-01 16:29:02.155 - Thread: 1 -> Initialized large grid [GS] Atlas II - Explorer 10768 PCU
2024-06-01 16:29:02.307 - Thread: 13 -> Initialized large grid [TTC] Dragon Class Heavy Destroyer 11767 PCU
2024-06-01 16:29:02.500 - Thread: 14 -> Initialized large grid [TTC] Command Cruiser 10241 PCU
2024-06-01 16:29:02.501 - Thread: 15 -> Initialized large grid [GS] Javelin Class - Frigate 10406 PCU
2024-06-01 16:29:02.765 - Thread: 11 -> Initialized large grid [OLD] Medium CT Refit - MCTR13 11697 PCU
2024-06-01 16:29:03.050 - Thread: 15 -> Initialized large grid [OLD] Light Escort Epsilon 14414 PCU
2024-06-01 16:29:04.234 - Thread: 13 -> Initialized large grid [GS] Atlas - Explorer 11978 PCU
2024-06-01 16:29:04.589 - Thread: 12 -> Initialized large grid Prototype Frigate 10384 PCU
2024-06-01 16:29:04.947 - Thread: 1 -> Initialized large grid Prototype Zelyth Destroyer 15729 PCU
2024-06-01 16:29:05.011 - Thread: 15 -> Model Models\Characters\Astronaut\SE_astronaut.mwm - Found too many collision shapes, only the first 10 will be used

Possible solution to the unloading issue: I used SEToolbox to delete the modded ammo floating objects in the world before loading and it loads/saves/re-loads fine for me.

Wow I didn't realize That was happening. There shouldn't be any modded weapons in that world though. I just checked the original world and there are no modded items or entities that I can see. I'm not sure how that is possible...

I was able to duplicate AlfieUK's solution. Removing the modded ammo floating objects using SEToolbox allowed me to load the world. I have seen cases where removing a mod sometimes breaks a world.

Ok I have no experience with SEToolbox so can you of you kindly show me how to replicate the process so I can update the world file? Thanks!

EDIT: I figured it out. I will upload the fixed world version shortly.

Fixed world out. Let me now if a new start is possible. Thanks! I will credit you all for helping in the change notes.

No problem. Looks like it is fine now, loads with no issues.
Nice work, thanks for sharing :)

Thanks I sorta figured it out right before you responded. I am in your debt though for finding a fix!