Simple ObjectContextManager Question

Hi,

I am new to CSLA. And got stuck up.

i am getting the following error when using the Entity frameework.

Error1The type 'ShasPatho.DalEf.ShasPathoEntities' cannot be used as type parameter 'C' in the generic type or method 'Csla.Data.ObjectContextManager<C>'. There is no implicit reference conversion from 'ShasPatho.DalEf.ShasPathoEntities' to 'System.Data.Objects.ObjectContext'.

any help would be great.

regards

ashish