我正在尝试创建2个版本的Android应用（免费/付费）。我有一个包含两个文件的Android库。我创建了一个新的Android项目，并尝试使用该库，但出现以下错误：

Found 2 versions of android-support-v4.jar in the dependency list,
but not all the versions are identical (check is based on SHA-1 only at this time).
All versions of the libraries must be the same at this time.
Versions found are:
Path: /Users/Zaheer/Developer/App Free/libs/android-support-v4.jar
    Length: 349252
    SHA-1: 612846c9857077a039b533718f72db3bc041d389
Path: /Users/Zaheer/Developer/App Library/libs/android-support-v4.jar
    Length: 337562
    SHA-1: 27c24d26e4c5d57976e6926367985548678e913c

有关如何解决此问题的任何想法？我一直在尝试没有成功的构建路径。