Description of problem: When starting Firefox with the "default" profile, the main window appears and immediately disappears. Starting in a terminal shows: (firefox:7272): Gdk-CRITICAL **: gdk_keymap_have_bidi_layouts: assertion `GDK_IS_KEYMAP (keymap)' failed (firefox:7272): GLib-GObject-WARNING **: cannot register existing type `GdkKeymap' (firefox:7272): GLib-CRITICAL **: g_once_init_leave: assertion `result != 0' failed (firefox:7272): GLib-GObject-CRITICAL **: g_type_register_static: assertion `parent_type > 0' failed (firefox:7272): GLib-GObject-CRITICAL **: g_object_new: assertion `G_TYPE_IS_OBJECT (object_type)' failed Version-Release number of selected component (if applicable): firefox-18.0-1.fc18.x86_64 How reproducible: 100% Steps to Reproduce: 1. firefox -P default Actual results: Assertion fails. Crash. Expected results: No crash. Additional info: Other profiles work; there's something about my default profile that is causing the crash. (Note that this just started happening; I did not update Firefox.) Also, starting Firefox with "/usr/lib64/firefox/firefox -P default" works, so the launcher script seems to be involved somehow.
I guess you're hitting Bug 895197 so try to disable Java (icedtea) and try again.
(In reply to comment #1) > I guess you're hitting Bug 895197 so try to disable Java (icedtea) and try > again. I had already disabled the Java plugin (Tools -> Add-ons). I can't uninstall the package, because I need javaws. icedtea-web-1.3.1-3.fc18 seems to fix. *** This bug has been marked as a duplicate of bug 895197 ***