New DirectX9.0c SDK differs with 9.0b ?!?!

Question

Hello. I've just set up DX9.0c SDK summer 2004 update. Before it i've used 9.0b. With DLL version 1.0.1901 (Microsoft.DirectX and Microsoft.directX.DirectPlay - 9.0b) my apps work properly, but with 1.0.2902 (9.0c) - not. For example, DirectPlay.Peer.GetServiceProviders(true) returns empty list in DX9.0c but in DX9.0b - 4 providers. I use Peer class from directplay and create host. Function Host() needs two addresses: host and device, which must have service provider component. But with DX9.0c i have no one?!?! somebody help thanks