Out of bounds index when trying to read string of rooms

[Miepee]

A few games generate the following stacktrace trying to load them:

System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at DogScepterLib.Core.GMDataReader.ReadGMString() in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\GMDataReader.cs:line 229
   at DogScepterLib.Core.Models.GMString.Deserialize(GMDataReader reader) in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\Models\GMString.cs:line 24
   at DogScepterLib.Core.GMDataReader.ReadPointerObject[T](Int32 ptr) in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\GMDataReader.cs:line 128
   at DogScepterLib.Core.GMDataReader.ReadStringPointerObject() in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\GMDataReader.cs:line 219
   at DogScepterLib.Core.Models.GMRoom.Layer.EffectProperty.Deserialize(GMDataReader reader) in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\Models\GMRoom.cs:line 703
   at DogScepterLib.Core.GMList`1.Deserialize(GMDataReader reader, ListDeserialize before, ListDeserialize after, ListDeserializeElement elemReader) in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\GMLists.cs:line 73
   at DogScepterLib.Core.GMList`1.Deserialize(GMDataReader reader) in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\GMLists.cs:line 85
   at DogScepterLib.Core.Models.GMRoom.Layer.Deserialize(GMDataReader reader) in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\Models\GMRoom.cs:line 431
   at DogScepterLib.Core.GMDataReader.ReadPointerObjectUnique[T](Int32 ptr, Boolean returnAfter) in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\GMDataReader.cs:line 181
   at DogScepterLib.Core.GMPointerList`1.DoReadPointerObjectUnique(GMDataReader reader, Boolean notLast) in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\GMLists.cs:line 167
   at DogScepterLib.Core.GMPointerList`1.Deserialize(GMDataReader reader, ListDeserialize before, ListDeserialize after, ListDeserializeElement elemReader) in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\GMLists.cs:line
191
   at DogScepterLib.Core.GMPointerList`1.Deserialize(GMDataReader reader) in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\GMLists.cs:line 199
   at DogScepterLib.Core.GMDataReader.ReadPointerObjectUnique[T](Int32 ptr, Boolean returnAfter) in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\GMDataReader.cs:line 181
   at DogScepterLib.Core.GMDataReader.ReadPointerObjectUnique[T]() in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\GMDataReader.cs:line 203
   at DogScepterLib.Core.Models.GMRoom.Deserialize(GMDataReader reader) in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\Models\GMRoom.cs:line 135
   at DogScepterLib.Core.GMDataReader.ReadPointerObjectUnique[T](Int32 ptr, Boolean returnAfter) in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\GMDataReader.cs:line 181
   at DogScepterLib.Core.GMPointerList`1.DoReadPointerObjectUnique(GMDataReader reader, Boolean notLast) in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\GMLists.cs:line 167
   at DogScepterLib.Core.GMPointerList`1.Deserialize(GMDataReader reader, ListDeserialize before, ListDeserialize after, ListDeserializeElement elemReader) in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\GMLists.cs:line
191
   at DogScepterLib.Core.GMPointerList`1.Deserialize(GMDataReader reader) in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\GMLists.cs:line 199
   at DogScepterLib.Core.Chunks.GMChunkROOM.Deserialize(GMDataReader reader) in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\Chunks\GMChunkROOM.cs:line 27
   at DogScepterLib.Core.GMChunkFORM.Deserialize(GMDataReader reader) in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\GMChunk.cs:line 170
   at DogScepterLib.Core.GMDataReader.Deserialize(Boolean clearData) in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\GMDataReader.cs:line 58
   at DogScepterCLI.ConsoleExtensions.LoadDataFile(IConsole console, String file, Boolean verbose) in C:\Users\narr\gitrepos\dog-scepter\DogScepterCLI\ConsoleExtensions.cs:line 127

Smash teh reds, incubination, growaway, non spacious oasis, stonks 9800, linna devotion to locomotion, dome run, island takeover, keeping the peace

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Corby Glorg has a similar stacktrace happening on sprites. Not sure if related:

System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at DogScepterLib.Core.GMDataReader.ReadGMString() in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\GMDataReader.cs:line 229
   at DogScepterLib.Core.Models.GMString.Deserialize(GMDataReader reader) in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\Models\GMString.cs:line 24
   at DogScepterLib.Core.GMDataReader.ReadPointerObject[T](Int32 ptr) in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\GMDataReader.cs:line 128
   at DogScepterLib.Core.GMDataReader.ReadStringPointerObject() in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\GMDataReader.cs:line 219
   at DogScepterLib.Core.Models.GMSprite.Deserialize(GMDataReader reader) in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\Models\GMSprite.cs:line 144
   at DogScepterLib.Core.GMDataReader.ReadPointerObjectUnique[T](Int32 ptr, Boolean returnAfter) in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\GMDataReader.cs:line 181
   at DogScepterLib.Core.GMPointerList`1.DoReadPointerObjectUnique(GMDataReader reader, Boolean notLast) in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\GMLists.cs:line 167
   at DogScepterLib.Core.GMPointerList`1.Deserialize(GMDataReader reader, ListDeserialize before, ListDeserialize after, ListDeserializeElement elemReader) in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\GMLists.cs:line
191
   at DogScepterLib.Core.GMPointerList`1.Deserialize(GMDataReader reader) in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\GMLists.cs:line 199
   at DogScepterLib.Core.Chunks.GMChunkSPRT.Deserialize(GMDataReader reader) in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\Chunks\GMChunkSPRT.cs:line 27
   at DogScepterLib.Core.GMChunkFORM.Deserialize(GMDataReader reader) in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\GMChunk.cs:line 170
   at DogScepterLib.Core.GMDataReader.Deserialize(Boolean clearData) in C:\Users\narr\gitrepos\dog-scepter\DogScepterLib\Core\GMDataReader.cs:line 58
   at DogScepterCLI.ConsoleExtensions.LoadDataFile(IConsole console, String file, Boolean verbose) in C:\Users\narr\gitrepos\dog-scepter\DogScepterCLI\ConsoleExtensions.cs:line 127