The game produces the following error after boot. It makes no difference what position Rimefeller is loaded in relation to Combat Extended, but disabling Combat Extended solves the issue.

[Combat Extended] Patch operation Verse.PatchOperationFindMod(Rimefeller) failed
file: F:\SteamLibrary\steamapps\workshop\content\294100\2890901044\Patches\Rimefeller\Napalm_Tweaks.xml
UnityEngine.StackTraceUtility:ExtractStackTrace ()
(wrapper dynamic-method) Verse.Log:Verse.Log.Error_Patch2 (string)
Verse.PatchOperation:Complete (string)
Verse.LoadedModManager:ClearCachedPatches ()
Verse.LoadedModManager:LoadAllActiveMods ()
Verse.PlayDataLoader:DoPlayLoad ()
Verse.PlayDataLoader:LoadAllPlayData (♥♥♥♥)
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,♥♥♥♥)
System.Threading.ExecutionContext:Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,♥♥♥♥)
System.Threading.ExecutionContext:Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object)
System.Threading.ThreadHelper:ThreadStart ()

Any Idea how to fix this?