nautilus crashed with SIGSEGV in gconf_client_get()

Nautilus didn't start but crashed when clicking the icon in the launcher.

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: nautilus-open-terminal 0.19-1
ProcVersionSignature: Ubuntu 3.0.0-12.19-generic 3.0.4
Uname: Linux 3.0.0-12-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 1.23-0ubuntu2
Architecture: i386
Date: Tue Oct 4 22:09:40 2011
ExecutablePath: /usr/bin/nautilus
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
ProcCmdline: nautilus -n
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x8549f99 <gconf_client_get+57>: cmp %eax,(%edx)
 PC (0x08549f99) ok
 source "%eax" ok
 destination "(%edx)" (0x00000020) not located in a known VMA region (needed writable region)!
SegvReason: writing NULL VMA
Signal: 11
SourcePackage: nautilus-open-terminal
StacktraceTop:
 gconf_client_get () from /usr/lib/libgconf-2.so.4
 gconf_client_get_bool () from /usr/lib/libgconf-2.so.4
 nautilus_open_terminal_get_file_items () from /usr/lib/nautilus/extensions-3.0/libnautilus-open-terminal.so
 nautilus_menu_provider_get_file_items () from /usr/lib/libnautilus-extension.so.1
 ?? ()
Title: nautilus crashed with SIGSEGV in gconf_client_get()
UpgradeStatus: Upgraded to oneiric on 2011-09-27 (7 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
XsessionErrors:
 (nautilus:1612): Gtk-CRITICAL **: gtk_action_set_visible: assertion `GTK_IS_ACTION (action)' failed
 (nautilus:1612): Gtk-CRITICAL **: gtk_action_set_visible: assertion `GTK_IS_ACTION (action)' failed
 (gwibber-service:1956): libindicate-WARNING **: Menu being changed when the indicator is visible. Listeners will NOT be notified of this change.
 (firefox:1842): Gtk-WARNING **: Unable to retrieve the file info for `file:///home/frank/Downloads/definitive-guide-to-marketing-metrics-marketing-analytics.pdf': Error stating file '/home/frank/Downloads/definitive-guide-to-marketing-metrics-marketing-analytics.pdf': No such file or directory
 (firefox:1842): Gtk-WARNING **: Unable to retrieve the file info for `file:///home/frank/Downloads/Guide-B2B-Social-Media-All.pdf': Error stating file '/home/frank/Downloads/Guide-B2B-Social-Media-All.pdf': No such file or directory