Provider %1 was loaded from %2 and initialized successfully but the provider did not register the required callback functions. ...

Provider %1 was loaded from %2 and initialized successfully but the provider did
not register the required callback functions. These callback functions are used
to notify the provider when requests are received and to shutdown the provider. 
Windows Deployment Services server will unload the provider. However, since no 
callback has been registered the server may be unstable. Please correct the 
problem and restart the service.