Unable to instantiate GP process from CAF application service

Hi,

I am trying to instantiate a process from my CAF application service as follows.

IGPProcess process = GPProcessFactory.getDesigntimeManager().getActiveTemplate("7CE44BF090BF11D99817000D60B211F1",user);

When the execution reaches this step, I am getting the following exception.

com.sap.engine.frame.core.load.SAPClassNotFoundException

I suspect that CAF runtime is not able to load GPProcessFactory class. Is there any settings that need to be done or I have to deploy something on the server?

Please help.

Thanks

Raghav