Since dependent assets that were not located have no exception thrown, detection of this event could be needed by some tools e.g. jMonkeyPlatform to indicate to the user that the asset may have not been loaded correctly. git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@8597 75d07b2b-3a1a-0410-a2c5-0572b91ccdca