android – 将SDK工具和ADT更新为17,现在获得VerifyErrors

后,应用程序在访问其中一个库项目中定义的类的引用后立即崩溃.错误如：

Unable to resolve superclass of Lcom/my/package/name/MyActivity; (118)
Link of class 'Lcom/my/package/name/MyActivity;' failed
VFY: unable to find class referenced in signature (Lcom/my/package/name/MyActivity;)

和：

FATAL EXCEPTION: main
  java.lang.VerifyError: my/package/name/util/SomeClass
    at my.package.name.App.onCreate(App.java:120)
    at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:969)
    at android.app.ActivityThread.handleBindApplication(ActivityThread.java:3925)
    at android.app.ActivityThread.access$1300(ActivityThread.java:122)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1184)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:137)
    at android.app.ActivityThread.main(ActivityThread.java:4340)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:511)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
    at dalvik.system.NativeStart.main(Native Method)

(我的包和类没有这样命名,只是修改它们以便在这里发布)

关于这里发生了什么的任何想法？据我所知,没有构建错误,我的项目看起来正确引用了库项目.