title: Instrumentation run failed due to 'java.lang.IllegalAccessError'
body: <p>I'm writing tests for Android project right now and just don't understand why is this such a pain! After a whole day of setup I finally get it work, but now, after I have written several test classes Intellij IDEA stands: </p>
  
  <pre><code>Test failed to run to completion. Reason: 'Instrumentation run failed due to 'java.lang.IllegalAccessError''. Check device logcat for details
  Test running failed: Instrumentation run failed due to 'java.lang.IllegalAccessError'
  </code></pre>
  
  <p>The tests I was running just a couple of minutes ago can't be run anymore. Taking into account I rolled back to my latest commit where everything was ideal and I wasn't changing any settings I'm just wondering why.</p>
  
  <p>Here is what logcat is saying:</p>
  
  <pre><code>02-12 20:16:09.398: E/AndroidRuntime(4922): FATAL EXCEPTION: main
  02-12 20:16:09.398: E/AndroidRuntime(4922): java.lang.IllegalAccessError: Class ref in pre-verified class resolved to unexpected implementation
  02-12 20:16:09.398: E/AndroidRuntime(4922):     at com.actionbarsherlock.view.MenuInflater$MenuState.readItem(MenuInflater.java:327)
  02-12 20:16:09.398: E/AndroidRuntime(4922):     at com.actionbarsherlock.view.MenuInflater.parseMenu(MenuInflater.java:147)
  02-12 20:16:09.398: E/AndroidRuntime(4922):     at com.actionbarsherlock.view.MenuInflater.inflate(MenuInflater.java:97)
  02-12 20:16:09.398: E/AndroidRuntime(4922):     at &lt;package&gt;.ui.CheckPasswordActivity.onCreateOptionsMenu(CheckPasswordActivity.java:130)
  02-12 20:16:09.398: E/AndroidRuntime(4922):     at android.support.v4.app._ActionBarSherlockTrojanHorse.onCreatePanelMenu(_ActionBarSherlockTrojanHorse.java:45)
  02-12 20:16:09.398: E/AndroidRuntime(4922):     at com.actionbarsherlock.ActionBarSherlock.callbackCreateOptionsMenu(ActionBarSherlock.java:556)
  02-12 20:16:09.398: E/AndroidRuntime(4922):     at com.actionbarsherlock.internal.ActionBarSherlockNative.dispatchCreateOptionsMenu(ActionBarSherlockNative.java:60)
  02-12 20:16:09.398: E/AndroidRuntime(4922):     at com.actionbarsherlock.app.SherlockFragmentActivity.onCreatePanelMenu(SherlockFragmentActivity.java:154)
  02-12 20:16:09.398: E/AndroidRuntime(4922):     at com.android.internal.policy.impl.PhoneWindow.preparePanel(PhoneWindow.java:407)
  02-12 20:16:09.398: E/AndroidRuntime(4922):     at com.android.internal.policy.impl.PhoneWindow.doInvalidatePanelMenu(PhoneWindow.java:769)
  02-12 20:16:09.398: E/AndroidRuntime(4922):     at com.android.internal.policy.impl.PhoneWindow$1.run(PhoneWindow.java:201)
  02-12 20:16:09.398: E/AndroidRuntime(4922):     at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749)
  02-12 20:16:09.398: E/AndroidRuntime(4922):     at android.view.Choreographer.doCallbacks(Choreographer.java:562)
  02-12 20:16:09.398: E/AndroidRuntime(4922):     at android.view.Choreographer.doFrame(Choreographer.java:531)
  02-12 20:16:09.398: E/AndroidRuntime(4922):     at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735)
  02-12 20:16:09.398: E/AndroidRuntime(4922):     at android.os.Handler.handleCallback(Handler.java:725)
  02-12 20:16:09.398: E/AndroidRuntime(4922):     at android.os.Handler.dispatchMessage(Handler.java:92)
  02-12 20:16:09.398: E/AndroidRuntime(4922):     at android.os.Looper.loop(Looper.java:137)
  02-12 20:16:09.398: E/AndroidRuntime(4922):     at android.app.ActivityThread.main(ActivityThread.java:5039)
  02-12 20:16:09.398: E/AndroidRuntime(4922):     at java.lang.reflect.Method.invokeNative(Native Method)
  02-12 20:16:09.398: E/AndroidRuntime(4922):     at java.lang.reflect.Method.invoke(Method.java:511)
  02-12 20:16:09.398: E/AndroidRuntime(4922):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
  02-12 20:16:09.398: E/AndroidRuntime(4922):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
  02-12 20:16:09.398: E/AndroidRuntime(4922):     at dalvik.system.NativeStart.main(Native Method)
  </code></pre>
  
  <p>Although I didn't even touched this class, the CheckPasswordActivity line:130 it refers to is just:</p>
  
  <pre><code>@Override
      public boolean onCreateOptionsMenu(Menu menu) {
          MenuInflater inflater = getSupportMenuInflater();
          inflater.inflate(R.menu.menu_check_password, menu);
          return true;
      }
  </code></pre>