The above error arises when the content provider has been declared incorrectly in the manifest.
1. Make sure that this is defined WITHIN the tags
In the above, android:authorities is just the name of a string that should be unique. Its different from the android:name, which is the fully qualified name of your ContentProvider implementation that implements android.content.ContentProvider
2. Although the actual content provider implementation may reside in a library project, the definition should be reside in the androidmanifest.xml of the main project.