Building an application without Hosting Layer

Hi,

I was trying to modify the Design Pattern Framework's WinForms application and have it run without the Hosting Layer. I followed all  instructions in the Patterns in Action document.  However, the compiler gives me a conversion error in Presentation layer:  'Cannot convert from System.Collections.Generic.IList<ActionService.DataTransferObjects.CustomerDto> to ActionService.DataTransferObjects.CustomerDto[]'

Could you tell me what I did wrong?

Thanks
Vivek