Android: Unable to find explicit activity class… startActivity from a PreferenceActivity

Question

I\'m trying to start a new Activity from a PreferenceActivity. However, it fails with \"Unable to find explicit activity class. Have you declared this activity in your Andro

Answer 1

Copying poster's solution into the answer section, in order to remove this from the "Unanswered" filter:

It wasn't a problem with my code, but with Eclipse and the Android SDK. After some research, I did "Help -> Check for updates" in Eclipse and everything is working now.