PCM Client Login Failure

[mungus]

Hi,

I've recently taken over management of a site which is running PCM v3 on a server.  I want to configure access from a network management station.  I've installed the client and configured access.txt  but when I try to connect I get the error:

   "Login Failure: The server is not accepting remote clients.  Check the for the presense of the correct licenses" (sic)

The server has three active licences (PCM Agent, PCM for HP and PCM Plus), do I need an additional one for the client functionality to work?  I can't find any reference to this error or client licensing anywhere.

Regards,

Mungus