// Drawinfo errors
	// bad corner = a corner does not have enough data, less than 1 each v/n/t
	// bad corner plus numbers = a corner has invalid v/n/t data
	// bad cmd = the drawinfo.bzw structure is not correct: verify the command indices
	//  drawInfo has no mesh = duhhh
	//  Bad index type = you tried to use quads when tris were expected ???