Model: - Model properly sized in mm units - Model has no hidden / frozen elements, no groups / linked objects - No lights, cameras, helpers, layers, particle view - All elements has 100/100/100 scale and correct normals - No any modifiers in stack except of turbosmooth - Elements properly named Materials and maps: - No missing textures - No unnecessary maps in environment / background / unwrap modifier - Material editor resetted, all paths striped - Materials and textures properly named General: - No 3rd-party plugin used - No ALC and CRP viruses - Track View Controllers deleted