Mint 17rc, based on Ubuntu 14.04 exhibits the same symptoms: Twinkle runs and registers with the sip server, but no graphical user interface is available.
Twinkle works ok in Mint 13, based on Ubuntu 12.04
Mint 17rc, based on Ubuntu 14.04 exhibits the same symptoms:
Twinkle runs and registers with the sip server, but no graphical user interface is available.
Twinkle works ok in Mint 13, based on Ubuntu 12.04