It was one of those days, you realize there is an update and you think, yeah sure, what can go wrong.
So the problem at hand. Running Eclipse (Juno, version shouldn’t matter) with ADT, Android Development Tools, and you updated the ADT to rev 22. You’ll get numerous errors if you’re very unlucky. When you run your app it’ll failed and the logcat showing errors. The main error:
The .classpath file will also have changed.
– Right-click your project -> Properties -> Java Build Path > Order and Export tab
– Check the “Android Private Libraries”
– Then “Project -> Clean”
Note if it doesn’t work: Depending on the situation, some have reported they needed to checked everything in “Order and Export tab”
Thank to the error fix from Google plus comments: