He was likely overexaggerating. The error texture is not a bug, it's part of the game, the tutorial/instruction guide is on the page of the game, please refer to that, sorry for the inconvenience.
ok, something was really wrong on my end! i see whats the games mechanics now. interesting concept, quite good visuals althougth controls are a bit rigid and the darkness/fog make it a bit too hard to navigate through the level
