title: ClassNotFoundException after ADT update
body: <p>I've recently updated Android SDK &amp; Eclipse ADT plugin to latest version. Now when i try to run a pre-existing Android project, the LogCat shows a <code>ClassNotFoundException</code>.</p>
  
  <p>I tried to create a new device but the problem still exists.</p>
  
  <h2>Manifest</h2>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
  package="com.example.myapp"
  android:versionCode="1"
  android:versionName="1.0" &gt;
  
  &lt;uses-sdk
      android:minSdkVersion="8"
      android:targetSdkVersion="17" /&gt;
  
  &lt;uses-permission android:name="android.permission.INTERNET" /&gt;
  &lt;uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /&gt;
  &lt;uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /&gt;
  
  &lt;application
      android:allowBackup="true"
      android:icon="@drawable/ic_launcher"
      android:label="@string/app_name"
      android:theme="@style/AppTheme" &gt;
      &lt;activity
          android:name="com.example.myapp.MainActivity"
          android:label="@string/app_name"
          android:windowSoftInputMode="stateHidden" &gt;
          &lt;intent-filter&gt;
              &lt;action android:name="android.intent.action.MAIN" /&gt;
  
              &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
          &lt;/intent-filter&gt;
      &lt;/activity&gt;
  &lt;/application&gt;
  </code></pre>
  
  <p></p>
  
  <h2>LogCat</h2>
  
  <pre><code>05-17 13:09:56.357: E/AndroidRuntime(969): FATAL EXCEPTION: main
  05-17 13:09:56.357: E/AndroidRuntime(969): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.myapp/com.example.myapp.MainActivity}: java.lang.ClassNotFoundException: Didn't find class "com.example.myapp.MainActivity" on path: /data/app/com.example.myapp-1.apk
  05-17 13:09:56.357: E/AndroidRuntime(969):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2106)
  05-17 13:09:56.357: E/AndroidRuntime(969):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
  05-17 13:09:56.357: E/AndroidRuntime(969):  at android.app.ActivityThread.access$600(ActivityThread.java:141)
  05-17 13:09:56.357: E/AndroidRuntime(969):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
  05-17 13:09:56.357: E/AndroidRuntime(969):  at android.os.Handler.dispatchMessage(Handler.java:99)
  05-17 13:09:56.357: E/AndroidRuntime(969):  at android.os.Looper.loop(Looper.java:137)
  05-17 13:09:56.357: E/AndroidRuntime(969):  at android.app.ActivityThread.main(ActivityThread.java:5041)
  05-17 13:09:56.357: E/AndroidRuntime(969):  at java.lang.reflect.Method.invokeNative(Native Method)
  05-17 13:09:56.357: E/AndroidRuntime(969):  at java.lang.reflect.Method.invoke(Method.java:511)
  05-17 13:09:56.357: E/AndroidRuntime(969):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
  05-17 13:09:56.357: E/AndroidRuntime(969):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
  05-17 13:09:56.357: E/AndroidRuntime(969):  at dalvik.system.NativeStart.main(Native Method)
  05-17 13:09:56.357: E/AndroidRuntime(969): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.example.myapp.MainActivity" on path: /data/app/com.example.myapp-1.apk
  05-17 13:09:56.357: E/AndroidRuntime(969):  at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:65)
  05-17 13:09:56.357: E/AndroidRuntime(969):  at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
  05-17 13:09:56.357: E/AndroidRuntime(969):  at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
  05-17 13:09:56.357: E/AndroidRuntime(969):  at android.app.Instrumentation.newActivity(Instrumentation.java:1054)
  05-17 13:09:56.357: E/AndroidRuntime(969):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2097)
  05-17 13:09:56.357: E/AndroidRuntime(969):  ... 11 more
  </code></pre>
  
  <p>I noticed that the new APK file is called <strong>myapp-1.apk</strong>, while it was usually called <strong>myapp.apk</strong>.
  Can someone tell me how to fix?</p>