When using the Cylinder sample project with Unity 4 and Vuforia 4, you will get this error when pressing Play:
NullReferenceException with Unity cylinder sample project
April 4, 2015 - 4:34am #1
NullReferenceException: Object reference not set to an instance of an object
AppManager.Draw () (at Assets/Common/UIFramework/AppManager.cs:70)
SceneViewManager.OnGUI () (at Assets/Common/UIFramework/SceneViewManager.cs:70)
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