Hi,
If the ConnectUsingTcp approach is not working, there are a few things to check.
First, are you able to send a CodeSite message using the default connection method? That is, without calling ConnectUsingTcp? This will ensure that the Dispatcher is not Disabled, or that the Live Viewer is Blocking Incoming messages.
Next, are you specifying any parameters when calling ConnectUsingTcp? When no parameters are specified, the default host (localhost) and TCP port (3434) are used.
Next, check the Dispatcher Settings and verify that the TCP Port specified matches. I would also recommend checking that any Firewall software is not blocking that port.
Ray