Getting Error while Enhancing view for component BT111h_oppt

Hi,

I am trying to enhance the  BT111H_OPPT/OpportunityOVViewSet  of  component BT111h_oppt.

I right clicked on this and clicked on Enhance. in the end it showed the error messages as below.

* Class Generation Cancelled.

* Generation of derivation Classes failed.

Due to this,  the above view not get enhanced.

Could anybody help me on this.

Thanks

Sudhansu