ProGuard的找不到（或读取）输入罐中的一个。如果你安装了4.4 ProGuard的4.5.1相反，它会打印出正确的文件名，这样你就可以找出为什么它丢失了。

ProGuard can't find (or read) one of the input jars. If you install ProGuard 4.5.1 instead of 4.4, it will print out the proper file name, so you can find out why it is missing.