title: java.lang.NoSuchFieldError android/support/v7/AppCompat/
body: <p>After starting my eclipse today, any project I run returns the following error:</p>
  
  <pre><code>08-06 08:01:23.770: E/AndroidRuntime(5406): FATAL EXCEPTION: main
  08-06 08:01:23.770: E/AndroidRuntime(5406): Process: be.thomasmore.powerfactory, PID: 5406
  08-06 08:01:23.770: E/AndroidRuntime(5406): java.lang.NoSuchFieldError: No static field abc_screen_toolbar of type I in class Landroid/support/v7/appcompat/R$layout; or its superclasses (declaration of 'android.support.v7.appcompat.R$layout' appears in /data/app/be.thomasmore.powerfactory-2/base.apk)
  08-06 08:01:23.770: E/AndroidRuntime(5406):     at android.support.v7.app.AppCompatDelegateImplV7.ensureSubDecor(AppCompatDelegateImplV7.java:299)
  08-06 08:01:23.770: E/AndroidRuntime(5406):     at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:246)
  08-06 08:01:23.770: E/AndroidRuntime(5406):     at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:106)
  08-06 08:01:23.770: E/AndroidRuntime(5406):     at be.thomasmore.powerfactory.MainActivity.onCreate(MainActivity.java:44)
  08-06 08:01:23.770: E/AndroidRuntime(5406):     at android.app.Activity.performCreate(Activity.java:5990)
  08-06 08:01:23.770: E/AndroidRuntime(5406):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
  08-06 08:01:23.770: E/AndroidRuntime(5406):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
  08-06 08:01:23.770: E/AndroidRuntime(5406):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
  08-06 08:01:23.770: E/AndroidRuntime(5406):     at android.app.ActivityThread.access$800(ActivityThread.java:151)
  08-06 08:01:23.770: E/AndroidRuntime(5406):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
  08-06 08:01:23.770: E/AndroidRuntime(5406):     at android.os.Handler.dispatchMessage(Handler.java:102)
  08-06 08:01:23.770: E/AndroidRuntime(5406):     at android.os.Looper.loop(Looper.java:135)
  08-06 08:01:23.770: E/AndroidRuntime(5406):     at android.app.ActivityThread.main(ActivityThread.java:5254)
  08-06 08:01:23.770: E/AndroidRuntime(5406):     at java.lang.reflect.Method.invoke(Native Method)
  08-06 08:01:23.770: E/AndroidRuntime(5406):     at java.lang.reflect.Method.invoke(Method.java:372)
  08-06 08:01:23.770: E/AndroidRuntime(5406):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
  08-06 08:01:23.770: E/AndroidRuntime(5406):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
  </code></pre>
  
  <p>Last night everything was still working fine..</p>
  
  <p>Any ideas?</p>