Hi Jelmer, you're trying to use an item from "Recent connections" that is not valid in 2.1.alpha1 anymore. You can get rid of that entry with:
dconf reset /org/blueman/plugins/recentconns/recent-connections I've filed an upstream bug regarding an automatic reset on every installation: https://github.com/blueman-project/blueman/issues/607 You should see some audio service (probably source and sink) you can connect to in the right-click menu for the device. If that's not the case, please use the info item and report the first part of each UUID. Regards