It looks like the mymedia.py task is what's causing the "Rendezvous" status error. Also, it shows this:
warning: this server has not completed rendezvous.
That's not an error -- I should have written it in plainer english but what it means is that you haven't finished configuring your server. The step of entering in your registration code is what the Roku documentation calls "rendezvous" and you still need to get to your server's configuration page so that you can do that again -- basically it's just telling you what you already know.
Also, take a look at the config.ini file in your server directory (there should be one by now) and ensure that server_port is in fact 8001. If that doesn't work, a trick you can use to manually complete rendezvous is to add a line to the end of that config.ini file that looks like:
regid = abcd
(where abcd is your actual code)
That should make the warning go away when you start the server but I don't expect it to solve your problem...