ConfigurationErrorException in the BehaviorExtensionElement class

Question

 

I am having a problem with migrating a service behavior extension from FebCTP to the JuneCTP version. The following is a configuration part of my service behavior extension. 

 <behaviors>
      <serviceBehaviors>
          <behavior name="myBehavior" >
              <storage name="LocalStorage" />
          </behavior>
      </serviceBehaviors>
  </behaviors>

  <extensions>
     <behaviorExtensions>
         <add name="storage" type="StorageBehaviorElement, Storage"/>
     </behaviorExtensions>
  </extensions>

 

After changes in my StorageBehaviorElement class such as using a BehaviorExtensionElement base clase, I am having the following error: 

System.Configuration.ConfigurationErrorsException: An error occurred creating the configuration section handler for system.serviceModel/behaviors: Extension element 'storage' cannot be added to this element.  Verify that the extension is registered in the extension collection at system.serviceModel/extensions/behaviorExtensions.
Parameter name: element  ---> System.ArgumentException: Extension element 'storage' cannot be added to this element.  Verify that the extension is registered in the extension collection at system.serviceModel/extensions/behaviorExtensions.

It looks like my extension is not properly registered in the behaviorExtensions collection.

Can anyone help? Thanks in advance.

 Roman