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Blackness in parts of screen - lighting engine bug?

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Mar 26, 2017
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A bug I'm now encountering in my map, during multiplayer sessions only. (other players get it too)

It makes the ground, and parts of the model completely black. Makes it very difficult to see what's happening.



This is NOT caused by view distance fog.
It suddenly pops in this state, and like 5-10 mins later it went back to normal.

Seems like a bug in the lighting engine with my map.

Some info:
-I use alot of custom models
-I have converted all custom textures into dds format
-Most of the textures are in DXT1 format, some in DXT5

I have checked War3Log, and it mentions a lot of these errors:
6/3 19:50:41.403 model creation failed - ThisModelEditIsMadeByGeneralFrankDoNotEdit
6/3 19:50:41.636 model creation failed - Sprite First Ref
6/3 19:50:44.452 model creation failed -
6/3 20:01:28.549 model creation failed - war3mapImported\Build.mdx
6/3 20:01:28.549 model creation failed - war3mapImported\DecayMesh.mdx
6/3 20:32:38.747 Solid texture substituted - UI\Glues\MainMenu\MainMenu3d_exp\Chains_silver_mip1.blp
6/3 19:52:27.582 ITexCreate fail - Name = UI\Console\Undead\UndeadUITile05.dds, T = 0, w = 6, h = 10, d = 1, fmt = 17, flags 1249
6/3 19:52:27.582 ITexCreate fail - Name = UI\Console\Undead\UndeadUITile06.dds, T = 0, w = 6, h = 10, d = 1, fmt = 17, flags 1249
6/3 19:52:27.582 ITexCreate fail - Name = UI\Console\Undead\UndeadUITile-InventoryCover.dds, T = 0, w = 6, h = 10, d = 1, fmt = 17, flags 1249

There are more of them, but I picked out some. Don't know what to make of them, and the timestamp doesn't make that much sense to me. I believe game started around 19:50 ish, and lasted till ~20:50.


Now at this moment I don't know how to go on about this. Is there a faulty model that breaks the game engine? Could it be related to my texture conversions? Or might it be something else altogether. This is really a game ruining bug, because things are barely visible anymore.
 
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