lost object references tends to happen now and then especially in heavily modified game, so I suspect this is not an issue (unless it happens many many times)

Did you try playing the game in
developer mode? And set the debug log to pause on error. This allows you to see the error when it happen without having to look into long log files. Also allows you to see how many times the same error

reference exception causing it, but it is related to a Haul Urgently command for sure. Could be from issuing a "Haul Everything" command or accidentally selecting a Fogged object to haul.

I dont see anything
.

Backstory related or not, I think that is definitely why none of the raiders spawned. There was an error with their min and max age that was causing them to not spawn.

AdeptusMechanicus.settings.AMAMod: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.FormatException: Method virtual System.Void
could not load library C:/Program Files (x86)/Steam/steamapps/common/RimWorld/RimWorldWin64_Data/Mono/data-0000014F905D9920.dll
DependencyChecker!
Error while instantiating a mod of type

mod that will be listed on the workshop page so should be easy enough to fix.

There are other instances of errors related to missing a required mod that doesn't related to objects, perhaps it's a
Cross reference error means one mod is looking for objects from another mod and not finding them.

Could not resolve any root named X means you are missing a dependent mod that defines a base item

RimWorld 0.19.2017 rev1280
Verse.Log:Message(String, Boolean)
RimWorld.VersionControl:LogVersionNumber()
Verse.Root:CheckGlobalInit()
Verse.Root:Start()
Verse.Root_Entry:Start()

Tried to use an
uninitialized DefOf of type StatDefOf. DefOfs are initialized right after all defs all loaded. Uninitialized DefOfs will return only nulls. (hint: don't use DefOfs as default field values in Defs, try to resolve

target of an invocation. ---> System.NullReferenceException: Object reference not set to an instance of an object
at BetterLoading.LoadingScreenTipManager.TryReadCachedTipsFromConfig () [0x00006] in <b
(object,System.Reflection.BindingFlags,System.Reflection.Binder,object[],System.Globalization.CultureInfo)
System.Reflection.MonoCMethod:Invoke (System.Reflection.BindingFlags,System.Reflection.Binder,object[],System.Globalization.CultureInfo)
System.RuntimeType:CreateInstance

(Local and LocalLow), but still getting the errors. I know yellow errors are not serious, but trying to identify possible memory leaks from mods after my large mod set will no longer load(error/crash
(System.Threading.ExecutionContext,System.Threading.ContextCallback,object)
System.Threading.ThreadHelper:ThreadStart () [/spoiler]

Its like there is files left over the Mechadroids mod being enabled, also I think the "List`1" is referring to a mod called Stackable Chunks

GenTemperature.TryGetTemperatureForCell - Overrides room temperature within the cells of the RimFridge
TradeShip.ColonyThingsWillingToBuy - Add items stored inside a wall-fridge to the trade list if in a room with an orbital beacon
Have a colonist who got an infection...just noticed that his immunity hasn't been going up even though he's being treated. I even had him treated with glitterworld meds the last time around to try

their knowledge to overcome a "Raid" is not an Exploit. It's an intended effect of purposeful design - The player uses their knowledge of the game's mechanics to overcome an obstacle and to obtain a goal
... Well, that's more of a character flaw than commonly found than innocent human fallibility.

To sum - It's not an exploit at all. It's just a commonly used strategy that has been arrived at by players

, but I think the game is deleting things that it thinks are unnecessary (ie, pawns or objects that it thinks you will not possibly interact with), then later finding references to those items
Wow, that is one hell of an error log!
I'm not an expert on the interior workings of Rimworld's engine, but I've had enough problems with enough games over the years that I have a pretty good idea of