Description of problem:
I was try to install software and crashed simply and app name was "Iagno" I tried and simply crashed when I click the "install" button

Note : This bug created with debuginfo version because old one (https://bugzilla.redhat.com/show_bug.cgi?id=1082637) Same comment happened.

Version-Release number of selected component:
gnome-software-3.12.0-1.fc21

Additional info:
reporter:       libreport-2.2.0
backtrace_rating: 4
cmdline:        /usr/bin/gnome-software --gapplication-service
crash_function: _gtk_css_value_ref
executable:     /usr/bin/gnome-software
kernel:         3.14.0-0.rc8.git1.1.fc21.x86_64
runlevel:       N 5
type:           CCpp
uid:            1000

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 _gtk_css_value_ref at gtkcssvalue.c:51
 #1 _gtk_css_value_compute at gtkcssvalue.c:106
 #2 _gtk_css_computed_values_compute_value at gtkcsscomputedvalues.c:146
 #3 _gtk_css_lookup_resolve at gtkcsslookup.c:166
 #4 build_properties at gtkstylecontext.c:904
 #5 style_data_lookup at gtkstylecontext.c:944
 #6 gtk_style_context_should_animate at gtkstylecontext.c:728
 #7 _gtk_style_context_update_animating at gtkstylecontext.c:742
 #8 gtk_widget_map at gtkwidget.c:4598
 #9 gtk_widget_set_parent at gtkwidget.c:8988

Potential duplicate: bug 1030014