Description of problem:
1) I've removed ~/.config/xfce4/ and trying to start parole again causes a segfault. Always. 
2) It seems I need to kill ~/.local/share/xfce4/ too. Parole starts again.
3) Adding a music file, restarting Parole, it segfaults.

Those steps are reproducible here.

There is only ~/.local/share/xfce4/parole/auto-saved-playlist.m3u which looks okay and can be loaded with Audacious.

Version-Release number of selected component:
parole-0.5.1-1.fc19

Additional info:
reporter:       libreport-2.1.5
backtrace_rating: 4
cmdline:        parole
crash_function: g_type_create_instance
executable:     /usr/bin/parole
kernel:         3.9.9-302.fc19.x86_64
runlevel:       N 5
uid:            1000

Truncated backtrace:
Thread no. 1 (8 frames)
 #0 g_type_create_instance at gtype.c:1906
 #1 g_object_constructor at gobject.c:1855
 #4 gtk_window_new at gtkwindow.c:1380
 #5 parole_player_init at parole-player.c:3142
 #6 g_type_create_instance at gtype.c:1917
 #7 g_object_constructor at gobject.c:1855
 #9 g_object_new_valist at gobject.c:1836
 #11 parole_player_new at parole-player.c:3173