Version-Release number of selected component:
gnome-music-3.13.92-1.fc21

Additional info:
reporter:       libreport-2.2.3
cmdline:        python3 /usr/bin/gnome-music
executable:     /usr/bin/gnome-music
kernel:         3.16.3-300.fc21.x86_64
runlevel:       N 5
type:           Python3
uid:            1000

Truncated backtrace:
albumArtCache.py:148:lookup:RuntimeError: can't start new thread

Traceback (most recent call last):
  File "/usr/lib/python3.4/site-packages/gnomemusic/__init__.py", line 44, in wrapped
    retval = fn(*v, **k)
  File "/usr/lib/python3.4/site-packages/gnomemusic/view.py", line 377, in _on_item_activated
    self.header_bar, self.selection_toolbar)
  File "/usr/lib/python3.4/site-packages/gnomemusic/__init__.py", line 44, in wrapped
    retval = fn(*v, **k)
  File "/usr/lib/python3.4/site-packages/gnomemusic/widgets.py", line 183, in update
    ALBUM_ART_CACHE.lookup(item, 256, 256, self._on_look_up, None, real_artist, album)
  File "/usr/lib/python3.4/site-packages/gnomemusic/__init__.py", line 44, in wrapped
    retval = fn(*v, **k)
  File "/usr/lib/python3.4/site-packages/gnomemusic/albumArtCache.py", line 148, in lookup
    start_new_thread(self.lookup_worker, (item, width, height, callback, itr, artist, album))
RuntimeError: can't start new thread

Local variables in innermost frame:
album: "A'tashe Hagh"
callback: <bound method AlbumWidget.wrapped of <AlbumWidget object at 0x7f85b0fdcc18 (gnomemusic+widgets+AlbumWidget at 0xe4f980)>>
item: <MediaBox object at 0x7f85b0009ab0 (GrlMediaBox at 0x23d7820)>
height: 256
itr: None
self: <gnomemusic.albumArtCache.AlbumArtCache object at 0x7f85ca898ba8>
artist: 'Alireza ShahMohammadi'
width: 256