I've been enjoying Darkness Falls weekly with a group and when I can, solo. Today while exploring in my current solo game on DFalls-VSmall1 I've had a couple of crashes show up in the console (the second after fully exiting and restarting). This is happening in a town a little south of the north edge of the map. It's crashed twice, both times with the same call stack dealing with cave lighting:
2021-04-17T13:56:18 1209.362 ERR Exception in thread GenerateChunks:
2021-04-17T13:56:18 1209.362 EXC Specified cast is not valid.
InvalidCastException: Specified cast is not valid.
at TileEntityLight.CopyFrom (TileEntity _other) [0x00000] in <8acc464c86d74c55af84c07a2c0049a6>:0
at Prefab.CopyIntoLocal (ChunkCluster _cluster, Vector3i _destinationPos, System.Boolean _bOverwriteExistingBlocks, System.Boolean _bSetChunkToRegenerate, Que
stTags _questTags) [0x004a2] in <8acc464c86d74c55af84c07a2c0049a6>:0
at SphereII_CaveTunneler.AddDecorationsToCave (Chunk chunk) [0x0045c] in <7216219ffb014a5c8c5138e4a5ca2148>:0
at SphereII_CaveProject+SphereII_CaveProject_WorldDecoratorBlocksFromBiome.Postfix (Chunk _chunk) [0x00020] in <b76f020cd2aa44018e749ccac3789d1b>:0
at (wrapper dynamic-method) WorldDecoratorBlocksFromBiome.WorldDecoratorBlocksFromBiome.decoratePrefabs_Patch2(WorldDecoratorBlocksFromBiome,World,Chunk,Chunk
,Chunk,Chunk,GameRandom)
at WorldDecoratorBlocksFromBiome.DecorateChunkOverlapping (World _world, Chunk _chunk, Chunk cXp1Z, Chunk cXZp1, Chunk cXp1Zp1, System.Int32 seed) [0x00210] i
n <8acc464c86d74c55af84c07a2c0049a6>:0
at ChunkProviderGenerateWorld.tryToDecorate (Chunk _chunk) [0x000ca] in <8acc464c86d74c55af84c07a2c0049a6>:0
at ChunkProviderGenerateWorld.updateDecorationsWherePossible (Chunk chunk) [0x0003c] in <8acc464c86d74c55af84c07a2c0049a6>:0
at ChunkProviderGenerateWorld.GenerateSingleChunk (ChunkCluster cc, System.Int64 key, System.Boolean _forceRebuild) [0x0018e] in <8acc464c86d74c55af84c07a2c0049a6>:0
at ChunkProviderGenerateWorld.thread_GenerateChunks (ThreadManager+ThreadInfo _threadInfo) [0x0003a] in <8acc464c86d74c55af84c07a2c0049a6>:0
at ThreadManager.myThreadInvoke (System.Object _threadInfo) [0x0005d] in <8acc464c86d74c55af84c07a2c0049a6>:0
UnityEngine.DebugLogHandler:Internal_LogException(Exception, Object)
Could one of the files be corrupted? [Edit: This is with Version: Alpha 19.4 (b7) Compatibility Version: Alpha 19.4, Build: Linux 64 Bit]