Mercurial bugzilla hook crashed, so I write here for tracking bug has been fixed in release 94cd4d242dc5 (http://repos.goffi.org/sat/rev/94cd4d242dc5).
Profile authentication is not possible anymore. A dialog prompt for the password and then nothing happens (no error if the password is wrong, no profile selection if it's correct). This is not visible if you use a profile with empty password. Maybe related to the modification recently made on launchAction.