Please give us the following information:
1) the exact text of the error;
2) your call stack;
3) the steps we should follow to reproduce the problem. A small test project will be appreciated.
There is no exception.
If uou set EntityBase="some_base_interface",
created classes will be
public partial class EntityClass : : INotifyPropertyChanging, INotifyPropertyChangedsome_base_interface, INotifyPropertyChanging, INotifyPropertyChanged