解压unitypackage的时候出错，原因是路径中包含中文字符，更改成英文路径即可。
参考
Error while importing package: Couldn‘t decompress package
http://forum.unity3d.com/threads/error-while-importing-package-couldnt-decompress-package.15851/
Failed to import package with error: Couldn't decompress package
原文：http://blog.csdn.net/ixiaochouyu/article/details/46455119