This just happened, not sure if it was just a one time thing or has already been mentioned. But I was given some warning (not and in-game message), and crashed when I hit okay. Here are the last few lines of console:
fxDTSBrickData::Preload - unknown texID '0 0 1'
fxDTSBrickData::Preload - unknown texID '0.996 0.996 0.910 1.000'
fxDTSBrickData::Preload - unknown texID '0.3 -0.1 0.5'
fxDTSBrickData::Preload - unknown texID '0 0'
fxDTSBrickData::Preload - unknown texID ''
fxDTSBrickData::Preload - unknown texID '0 1'
fxDTSBrickData::Preload - unknown texID '-1 0 0'
fxDTSBrickData::Preload - unknown texID 'NORMALS:'
fxDTSBrickData::Preload - unknown texID '0 1 '
fxDTSBrickData::Preload - unknown texID '0 0 -1'
fxDTSBrickData::Preload - unknown texID 'NORMALS:'
fxDTSBrickData::Preload - unknown texID '0.5 0.5'
fxDTSBrickData::Preload - unknown texID ''
*** Phase 2: Download Ghost Objects
*** Phase 3: Mission Lighting
Successfully loaded mission lighting file: 'Add-Ons/Map_Kitchen/kitchen_1be18cd5.ml'
Mission lighting done
Executing config/client/Favorites.cs.
Could not locate texture: add-ons/script_adminshields/icon_goldBadge.png (download failed, using default texture)
+- using default 'gold' texture 'Add-Ons/Map_Bedroom/gold.jpg'
Fatal-ISV: (../engine/bricks/octBatcher.h @ 24) octVertex::validate - out of range pos.z
I'll attach the picture of the warning.