Here is my error message.

RimWorld 1.3.3066 rev1166
UnityEngine.StackTraceUtility:ExtractStackTrace ()
Verse.Log:Message (string)
RimWorld.VersionControl:LogVersionNumber ()
Verse.Root:CheckGlobalInit ()
Verse.Root:Start ()
Verse.Root_Entry:Start ()

Mod is missing supported versions list in About.xml! (example: <supportedVersions><li>1.0</li></supportedVersions>)
UnityEngine.StackTraceUtility:ExtractStackTrace ()
Verse.Log:Warning (string)
Verse.ModMetaData/ModMetaDataInternal:TryParseSupportedVersions (bool)
Verse.ModMetaData:Init ()
Verse.ModMetaData:.ctor (string,bool)
Verse.ModLister:RebuildModList ()
Verse.ModLister:.cctor ()
Verse.ModsConfig:.cctor ()
Verse.LoadedModManager:InitializeMods ()
Verse.LoadedModManager:LoadAllActiveMods ()
Verse.PlayDataLoader:DoPlayLoad ()
Verse.PlayDataLoader:LoadAllPlayData (bool)
Verse.Root/<>c:<Start>b__6_1 ()
Verse.LongEventHandler:RunEventFromAnotherThread (System.Action)
Verse.LongEventHandler/<>c:<UpdateCurrentAsynchronousEvent>b__27_0 ()
System.Threading.ThreadHelper:ThreadStart_Context (object)
System.Threading.ExecutionContext:RunInternal (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool)
System.Threading.ExecutionContext:Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool)
System.Threading.ExecutionContext:Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object)
System.Threading.ThreadHelper:ThreadStart ()

Mod 2009463077_harmony is missing packageId in About.xml! (example: <packageId>AuthorName.ModName.Specific</packageId>)
UnityEngine.StackTraceUtility:ExtractStackTrace ()
Verse.Log:Warning (string)
Verse.ModMetaData/ModMetaDataInternal:TryParsePackageId (bool,bool)
Verse.ModMetaData:Init ()
Verse.ModMetaData:.ctor (string,bool)
Verse.ModLister:RebuildModList ()
Verse.ModLister:.cctor ()
Verse.ModsConfig:.cctor ()
Verse.LoadedModManager:InitializeMods ()
Verse.LoadedModManager:LoadAllActiveMods ()
Verse.PlayDataLoader:DoPlayLoad ()
Verse.PlayDataLoader:LoadAllPlayData (bool)
Verse.Root/<>c:<Start>b__6_1 ()
Verse.LongEventHandler:RunEventFromAnotherThread (System.Action)
Verse.LongEventHandler/<>c:<UpdateCurrentAsynchronousEvent>b__27_0 ()
System.Threading.ThreadHelper:ThreadStart_Context (object)
System.Threading.ExecutionContext:RunInternal (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool)
System.Threading.ExecutionContext:Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool)
System.Threading.ExecutionContext:Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object)
System.Threading.ThreadHelper:ThreadStart ()

Exception filling window for RimWorld.Page_ConfigureStartingPawns: EdB.PrepareCarefully.InitializationException: Prepare Carefully failed to initialize ---> System.MissingFieldException: Field 'RimWorld.ApparelLayerDefOf.EyeCover' not found.
at EdB.PrepareCarefully.PrepareCarefully.InitializeProviders () [0x000ba] in <a2225e87063840d7ae5c5a86c954726e>:0
at EdB.PrepareCarefully.PrepareCarefully.Initialize () [0x0000b] in <a2225e87063840d7ae5c5a86c954726e>:0
at EdB.PrepareCarefully.HarmonyPatches.PrepareCarefullyButtonPatch.Postfix (RimWorld.Page_ConfigureStartingPawns __instance, UnityEngine.Rect& rect) [0x0008b] in <a2225e87063840d7ae5c5a86c954726e>:0
--- End of inner exception stack trace ---
at EdB.PrepareCarefully.HarmonyPatches.PrepareCarefullyButtonPatch.Postfix (RimWorld.Page_ConfigureStartingPawns __instance, UnityEngine.Rect& rect) [0x000fa] in <a2225e87063840d7ae5c5a86c954726e>:0
at (wrapper dynamic-method) RimWorld.Page_ConfigureStartingPawns.RimWorld.Page_ConfigureStartingPawns.DoWindowContents_Patch1(RimWorld.Page_ConfigureStartingPawns,UnityEngine.Rect)
at Verse.Window.InnerWindowOnGUI (System.Int32 x) [0x001ce] in <9bdc0a9d1f6744a18eed5eecd85205c5>:0
UnityEngine.StackTraceUtility:ExtractStackTrace ()
Verse.Log:Error (string)
Verse.Window:InnerWindowOnGUI (int)
UnityEngine.GUI:CallWindowDelegate (UnityEngine.GUI/WindowFunction,int,int,UnityEngine.GUISkin,int,single,single,UnityEngine.GUIStyle)