1399 exceptions related to this area. Exceptions are:
2017.08.08 09:28:05.103 CollectPlayers exception (System.NullReferenceException: Object reference not set to an instance of an object.
at Turbo.Collector.Players.PlayerCollector.******* *()
at Turbo.Collector.Collect.**************(String )
at Turbo.Collector.Collect.*******(Boolean ))
2017.08.08 09:28:05.205 minimap draw error (System.NullReferenceException: Object reference not set to an instance of an object.
at Turbo.Basic.MapRevealElement.*******(Single& , Single& , Single& , Single& )
at Turbo.Basic.MapRevealElement.Draw()
at Turbo.Basic.Overlay.DrawMinimapLayer())
Treasure (like you see in the Vault), Resplendent Chests, etc., it doesn't matter, cause the first exception.
TH overlay also does not work in the small area, which looks like a dock extending off a side wall (usually on lower West side of the full area map, but can be in two other locations), the wall is crumbled and broken. This causes the second exception.
32-bit version is what I use, but this may also happen in the 64-bit version.