Bluez Profile Registration

I'm trying to get a bluetoothe device working in Python on Bluez5. Currently I have the following:

    #set up a bluez profile to advertise device capabilities from a loaded service record
def init_bluez_profile(self):

    print("Configuring Bluez Profile")

    #setup profile options
    service_record=self.read_sdp_service_record()

    opts = {
        "ServiceRecord":service_record,
        "Role":"server",
        "RequireAuthentication":False,
        "RequireAuthorization":False,
        "Name":BTKbDevice.MY_DEV_NAME,
        "AutoConnect":True
    }

    #retrieve a proxy for the bluez profile interface
    bus = dbus.SystemBus()
    self.manager = dbus.Interface(bus.get_object("org.bluez","/org/bluez"), "org.bluez.ProfileManager1")
    self.profile = BTKbBluezProfile(bus, BTKbDevice.PROFILE_DBUS_PATH)
    self.manager.RegisterProfile(BTKbDevice.PROFILE_DBUS_PATH, BTKbDevice.UUID, opts)
    print("Profile registered ")

This code executes properly and the profile code is the standard one from teh bluez test cases:

class BTKbBluezProfile(dbus.service.Object):
fd = -1

@dbus.service.method("org.bluez.Profile1",
                                in_signature="", out_signature="")
def Release(self):
        print("Release")
        mainloop.quit()

@dbus.service.method("org.bluez.Profile1",
                                in_signature="", out_signature="")
def Cancel(self):
        print("Cancel")

@dbus.service.method("org.bluez.Profile1", in_signature="oha{sv}", out_signature="")
def NewConnection(self, path, fd, properties):
        self.fd = fd.take()
        print("NewConnection(%s, %d)" % (path, self.fd))
        for key in properties.keys():
                print ('key ' + key + ' value ' + properties[key])
                if key == "Version" or key == "Features":
                        print("  %s = 0x%04x" % (key, properties[key]))
                else:
                        print("  %s = %s" % (key, properties[key]))



@dbus.service.method("org.bluez.Profile1", in_signature="o", out_signature="")
def RequestDisconnection(self, path):
        print("RequestDisconnection(%s)" % (path))

        if (self.fd > 0):
                os.close(self.fd)
                self.fd = -1

def __init__(self, bus, path):
        dbus.service.Object.__init__(self, bus, path)

However when I get connections/disconnections nothing works. I've tried playing around with the various options but I just can't get anything to register. The documentation is light and there seems to be little debugging info I can get on the dbus communication. Has anybody succeeded in regsitering a profile and/or obtaining more debugging information on the bluez interaction?

Thanks.

from Bluez Profile Registration