Current master does not crash for me with gtk2 or gtk3 on RHEL 7.1. 24.5 does. master does have many "GdkPixbuf-CRITICAL" "GLib-GObject-CRITICAL" complaints though. Also, the toolbar looks messed up in IDL mode. It has a bunch of "A A A A ..." in it, which run "Save and Compile this file" etc.