想移植Ufo aftermath MOD的98式坦克到游戏中，结果就是直接报错。
报错语句：
{sensor
{visor "cannon_crew"
{bone "mgun_rot"}
{vision "cannon_crew"}
}
{visor "optic_t80"
{bone "visor2"}
{vision "optic_t80"}
}
{visor "tripleks_com_t80"
{bone "visor1"}
{vision "tripleks_com_t80"}