I'm getting a very strange bug, which very well may be a mod conflict, but in case it isn't, or if there's any indication of which mod might be causing it, I'll report it. It seems exclusive to large windows. If I try to construct a large window (and only large, normal are fine) where one was constructed previously but was then deconstructed, I'll get constant error spam. This is the error:

Could not register region Region(id=806, mapIndex=0, center=(170, 0, 175), links=0, cells=1, portal=LargeOpenWindow104436) in link (span=(root=(170, 0, 176), dir=East + length=1) hash=299067163476138, regions=805, 552): > 2 regions on link!
RegionA: id: 805
mapIndex: 0
links count: 12
type: Normal
--(span=(root=(168, 0, 168), dir=East + length=12) hash=3395291907260584, regions=291, 805)
--(span=(root=(168, 0, 168), dir=North + length=7) hash=1970324837662888, regions=803, 805)
--(span=(root=(170, 0, 175), dir=East + length=1) hash=299067163472042, regions=805, 552)
--(span=(root=(171, 0, 175), dir=East + length=1) hash=299067163472043, regions=805, 776)
--(span=(root=(172, 0, 175), dir=East + length=1) hash=299067163472044, regions=805, 526)
--(span=(root=(180, 0, 168), dir=North + length=12) hash=3377699721216180, regions=805, 615)
--(span=(root=(172, 0, 176), dir=East + length=1) hash=299067163476140, regions=805, 526)
--(span=(root=(168, 0, 180), dir=East + length=9) hash=2550866977177768, regions=805, 768)
--(span=(root=(171, 0, 176), dir=East + length=1) hash=299067163476139, regions=805, 776)
--(span=(root=(170, 0, 176), dir=East + length=1) hash=299067163476138, regions=805, 552)
--(span=(root=(178, 0, 180), dir=East + length=2) hash=580542140203186, regions=805, 768)
--(span=(root=(168, 0, 176), dir=North + length=4) hash=1125899907563688, regions=803, 805)
valid: True
makeTick: 839339
districtID: null district!
roomID: null room!
extentsClose: (168,168,179,179)
extentsLimit: (168,168,179,179)
ListerThings:
--Plant_Dandelion87771
--Plant_TreeOak67416
--Plant_TreeOak69662
--Plant_Grass68714
--Plant_Grass55882
--BiomesIslands_Fern69935
--BiomesIslands_Fern88643
--Plant_Bush68266
--BiomesIslands_Lavender69829
--Plant_Grass63764
--BiomesIslands_Fern58016
--SmashedStump88497
--BiomesIslands_Fern101407
--Plant_Grass67961
--Plant_Grass63327
--Plant_Grass69882
--Plant_TallGrass101454
--Plant_Grass69980
--BiomesIslands_FloweringFern66256
--BiomesIslands_OrangeTree68063
--Plant_TreeOak68976
--Plant_Grass69576
--Plant_TreeOak69178
--Plant_Grass97138
--Plant_Grass70615
--Plant_Grass57729
--Plant_Grass67744
--Plant_TallGrass87898
--BiomesIslands_FloweringFern67749
--BiomesIslands_OrangeTree68937
--Plant_Grass68867
--Plant_Grass69787
--BiomesIslands_OrangeTree69454
--Table1x2c87228
--Stool87239
--BiomesIslands_Fern68709
--Plant_Dandelion70522
--Plant_Grass69184
--Stool87234
--Plant_Grass61439
--BiomesIslands_OrangeTree91561
--Plant_Grass61894
--Plant_Brambles60622
--Plant_Grass103291
--Plant_Grass64985
--BiomesIslands_OrangeTree68392
--Plant_Grass88183
--Wall103043
--Wall104375
--LargeOpenWindow104436
--Wall102946
--Wall102947
--Wall103057
--Wall103062
--Plant_Grass96659
--Plant_Grass61515
--Plant_Grass57552
--Plant_Grass67923
--Plant_Bush66857
--Wall103144
--Filth_RubbleRock100878
--Plant_Brambles64062
--BiomesIslands_OrangeTree69828
--Filth_RubbleRock100843
--Filth_Dirt103960
--Plant_Grass88506
--Plant_Grass70247
--Filth_RubbleRock54984
--BiomesIslands_OrangeTree66448
--Filth_RubbleRock54982
--Filth_RubbleRock54978
--Plant_Dandelion97372
--Plant_Bush66789
--Plant_Berry69616
--Filth_RubbleRock54987
--BiomesIslands_FloweringFern101538
--Owl_Filth_Rocks72232
--Owl_Filth_Rocks72231
--Owl_Filth_Rocks72230
--Plant_TreePoplar67763
--BiomesIslands_Fern58923
--Filth_RubbleRock54981
--Filth_RubbleRock54977
--Wall103129
--Plant_Grass89730

RegionB: id: 552
mapIndex: 0
links count: 3
type: Portal
--(span=(root=(170, 0, 176), dir=East + length=1) hash=299067163476138, regions=805, 552)
--(span=(root=(170, 0, 175), dir=East + length=1) hash=299067163472042, regions=805, 552)
--(span=(root=(171, 0, 175), dir=North + length=1) hash=281474977427627, regions=552, 770)
valid: True
makeTick: 788099
districtID: 20
roomID: null room!
extentsClose: (170,175,170,175)
extentsLimit: (168,168,179,179)
ListerThings:
--Plant_Grass64985
--Wall103052
--Plant_Grass67923

UnityEngine.StackTraceUtility:ExtractStackTrace ()
Verse.Log:Error (string)
Verse.RegionLink:Register (Verse.Region)
Verse.RegionMaker:SweepInTwoDirectionsAndTryToCreateLink (Verse.Rot4,Verse.IntVec3)
Verse.RegionMaker:CreateLinks ()
Verse.RegionMaker:TryGenerateRegionFrom (Verse.IntVec3)
Verse.RegionAndRoomUpdater:RegenerateNewRegionsFromDirtyCells ()
Verse.RegionAndRoomUpdater:TryRebuildDirtyRegionsAndRooms ()
(wrapper dynamic-method) Verse.Map:Verse.Map.MapUpdate_Patch2 (Verse.Map)
(wrapper dynamic-method) Verse.Game:Verse.Game.UpdatePlay_Patch1 (Verse.Game)
Verse.Root_Play:Update ()