Two seperate users are reporting this issue with recent builds of gnome-software on fedora 20.

Here is the dump from the initial bug (https://bugzilla.redhat.com/show_bug.cgi?id=1018444):

Description of problem:
Tried to install gnome-maps using this utility.  As soon as I clicked the Install button the application crashed.

Version-Release number of selected component:
gnome-software-3.11.1-0.45.20131009git.fc20

Additional info:
reporter:       libreport-2.1.7
backtrace_rating: 4
cmdline:        gnome-software
crash_function: __strcmp_ssse3
executable:     /usr/bin/gnome-software
kernel:         3.11.3-301.fc20.x86_64
runlevel:       N 5
type:           CCpp
uid:            1000

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 __strcmp_ssse3 at ../sysdeps/x86_64/strcmp.S:210
 #1 gs_plugin_packagekit_refine_details at gs-plugin-packagekit-refine.c:417
 #2 gs_plugin_refine_require_details at gs-plugin-packagekit-refine.c:501
 #3 gs_plugin_refine at gs-plugin-packagekit-refine.c:592
 #4 gs_plugin_loader_run_refine at gs-plugin-loader.c:201
 #5 gs_plugin_loader_app_refine_thread_cb at gs-plugin-loader.c:1541
 #6 run_in_thread at gsimpleasyncresult.c:871
 #7 io_job_thread at gioscheduler.c:89
 #8 g_task_thread_pool_thread at gtask.c:1245
 #10 g_thread_proxy at gthread.c:798