Player crash on close button

aaron@uMacBook:~$ nuvolaplayer --debug
    Nuvola     Info main.vala:118: Welcome to Nuvola Player, development version: 2.0~unstable469
    Nuvola     Info main.vala:127: Report any issues/bugs you might find to http://nuvolaplayer.fenryxo.cz/Support/Bug_Reporting.html
    Nuvola    Debug main.vala:128: command: nuvolaplayer --debug
    Nuvola    Debug main.vala:130: Enabled features: Dynamic Proxy Resolver, Disk cache for remote data, Unity Quicklist, Dock Manager support, MPRIS support, console client, support for media keys, optimization of SVG images, Last.fm scrobbling, Notifications, Lyrics fetching, experimental features, debug symbols
    Nuvola    Debug main.vala:131: Disabled features:
       Gtk    Debug Connecting to session manager
    Nuvola    Debug main.vala:197: Application activated
   Diorite    Debug ConfigFile: Unable to read file:///home/aaron/.config/nuvolaplayer/main.conf
   Diorite    Debug Max data cache size: 100
   libsoup  Warning No feature manager for feature of type 'SoupProxyURIResolver'
   Diorite    Debug Setting proxy (auto): dynamic resolver
   Diorite    Debug Action activated: ui-both
    Nuvola    Debug servicesmanager.vala:86: Found service Pandora at /usr/share/nuvolaplayer/services/pandora, version 1.0
    Nuvola     Info servicesmanager.vala:99: Using service Pandora from /usr/share/nuvolaplayer/services/pandora, version 1.0
    Nuvola    Debug main.vala:459: Starting web interface for pandora: http://www.pandora.com/
    Nuvola    Debug jsapi.vala:437: Reset main object
   Diorite    Debug XFCE session vanished: org.xfce.SessionManager
   Diorite    Debug GNOME session appeared: org.gnome.SessionManager, :1.1
   Diorite    Debug Action activated: service
   Diorite    Debug Action activated: control
   Diorite    Debug Action activated: view
   Diorite    Debug Action activated: help
    Nuvola    Debug jsapi.vala:505: Window object cleared
    Nuvola    Debug jsapi.vala:552: JS API: API 1.x compatibility layer
    Nuvola    Debug jsapi.vala:577: JSAPI injected successfully
GnomeShell    Debug plugin loaded
No bp log location saved, using default.
[000:000] Browser XEmbed support present: 1
[000:000] Browser toolkit is Gtk2.
[000:000] Using Gtk2 toolkit
 <unknown>    Debug NP_Initialize
 <unknown>    Debug NP_Initialize succeeded
[000:027] Warning(optionsfile.cc:47): Load: Could not open file, err=2
[000:027] No bp log location saved, using default.
[000:027] Browser XEmbed support present: 1
[000:027] Browser toolkit is Gtk2.
[000:027] Using Gtk2 toolkit
 <unknown>    Debug NP_Initialize
 <unknown>    Debug NP_Initialize succeeded
 <unknown>    Debug NP_Initialize
 <unknown>    Debug NP_Initialize succeeded
 <unknown>    Debug NP_Initialize
 <unknown>    Debug NP_Initialize succeeded
    Nuvola    Debug mainwebview.vala:232: Widget blocked:
    Nuvola    Debug main.vala:778: Autoplay: false
    Nuvola    Debug mainwebview.vala:232: Widget blocked: http://s0.2mdn.net/2301899/PID_2173602_Total_Recall_970x250_main.swf
    Nuvola    Debug player.vala:137: Playback state changed: none → playing
    Nuvola    Debug player.vala:170: Album art changed: null → http://cont-sv5-1.pandora.com/images/public/amz/3/2/4/6/825646116423_500W_438H.jpg
    Nuvola    Debug player.vala:210: Artist changed: null → Echo & The Bunnymen
    Nuvola    Debug player.vala:217: Song changed: null → Lips Like Sugar
    Nuvola    Debug player.vala:224: Album changed: null → Echo & The Bunnymen (Remastered & Expanded Edition)
    Nuvola    Debug main.vala:643: On close: quit
    Nuvola    Debug main.vala:610: Application to be terminated
    Nuvola    Debug main.vala:618: User interface state saved.
    Nuvola Critical player.vala:258: Player: Frame command pause failed: (null)
    Nuvola    Debug main.vala:610: Application to be terminated
    Nuvola    Debug main.vala:618: User interface state saved.