I'm using an RPM, but I built it myself - I was trying to update it to the latest gmameui version.
$ rpm -ql gmameui | grep glade
/usr/share/gmameui/glade
/usr/share/gmameui/glade/audit_window.glade
/usr/share/gmameui/glade/directories.builder
/usr/share/gmameui/glade/filter_bar.glade
/usr/share/gmameui/glade/gmameui_prefs.glade
/usr/share/gmameui/glade/options.glade...
This happens either with no config when you answer “yes” to the mame binary path prompt, or when you answer “no” and go to Options → Directories afterwards. Tested on Fedora 11 x86_64. Backtrace is attached.