System.Runtime.InteropServices.COMException: The server threw an exception.

Hello all,

When I try to add a BusinessPartner using DI Server (PL29), it plainly refuses and pukes up this message:

System.Runtime.InteropServices.COMException: The server threw an exception. (Exception from HRESULT: 0x80010105 (RPC_E_SERVERFAULT))
   at SBODI_Server.NodeClass.Interact(String SOAPCommand)

In PL18 this used to work fine. What could be wrong?

Thank you,

Bram