SSID Package for BPC - error on SQL server

Hi, we have a dual server implementation (SQL server and and IIS server) - the BPC SQL tasks are registered on both servers and I can create an SSID package on the IIS server using the tasks - but not on the SQL server ! I get the message :

Cannot create a task with the name osoft.services.application.datamgr.task.ssidadmin ..... Verify that the name is correct.

Does anyone know what my issue is ?

Thanks

Si.