把对应texture目录下的texture.cfg改成如下内容即可解决
搬运自官方论坛, 感谢原作者 (Copied from Aerosoft offical forums, thanks to original author)
http://forum.aerosoft.com/index.php?/topic/87692-installing-airbus-extended-liveries/
[fltsim]
fallback.1=..\..\Aerosoft Airbus A320_A321 Base\Texture_Fallback_VC
fallback.2=..\..\Aerosoft Airbus A320_A321 Base\Texture_FallBack_A320
fallback.3=..\..\..\..\Scenery\Global\texture
fallback.4=..\..\..\..\..\..\Scenery\Global\texture