[CentOS] Firefox 60 crashes when trying to save an image

On any web page with an image, if i right-click on the image and select "Save Image As...", firefox crashes.

Final messages from stderr:
(firefox:3401): GLib-GIO-ERROR **: No GSettings schemas are installed on the system
[Child 3502, Chrome_ChildThread] WARNING: pipe error (3): Connection reset by peer: file /builddir/build/BUILD/firefox-60.1.0/ipc/chromium/src/chrome/common/ipc_channel_posix.cc, line 353
Trace/breakpoint trap (core dumped)

I've reported this on RHEL bugzilla (1601254), but on the off chance that this is a problem with the CentOS build I'm posting here as well. This is firefox-60.1.0-5.el6.centos.x86_64 on CentOS 6.10.

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Bob Nichols     "NOSPAM" is really part of my email address.
                 Do NOT delete it.