Websense agent cannot connect to server

Hi,

I'm trialing Endpoint DLP and I can't get the client to connect to the server. The client log shows the following error:

ERROR ClientCommunication - HTTPComm::SendObject to server <https://websense/EP/EndpointServer.dll> failed. CURL error - SSL connect error

How do I fix this? Can the client agent default to non-secure, ie port 80?

Thanks