Sorry, my fault, I made the mistake in thinking that after selecting 'Listen for Incoming Connections' in the list and that it had changed to a button, it was then listening for a connection. When infact, I needed to press the 'Connect' button; a little visual confusion going on there. Perhaps the 'Connect' button could change to 'Listen'? It may help visually.

Out of interest, why do you change the list into a button, is it because there is no way to lock the content from a user editing it? Perhaps if left as a list it would give less confusion – or maybe it’s just me.