compiz crashed with SIGSEGV in nux::WindowThread::GetWindowCompositor() from nux::BaseWindow::BaseWindow() from unity::dash::Controller::SetupWindow()

Gconf-cleaner crashed as soon as I tried to save the original config

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: libnux-2.0-0 2.6.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-18.29-generic-pae 3.2.9
Uname: Linux 3.2.0-18-generic-pae i686
ApportVersion: 1.94.1-0ubuntu2
Architecture: i386
Date: Mon Mar 12 18:45:29 2012
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta i386 (20120301)
ProcCmdline: compiz
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0xb45940c4 <_ZNK3nux12WindowThread19GetWindowCompositorEv+4>: mov 0xdc(%eax),%eax
 PC (0xb45940c4) ok
 source "0xdc(%eax)" (0x000000dc) not located in a known VMA region (needed readable region)!
 destination "%eax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: nux
StacktraceTop:
 nux::WindowThread::GetWindowCompositor() const () from /usr/lib/libnux-2.0.so.0
 nux::BaseWindow::BaseWindow(char const*, char const*, int) () from /usr/lib/libnux-2.0.so.0
 unity::dash::Controller::SetupWindow() () from /usr/lib/compiz/libunityshell.so
 unity::dash::Controller::EnsureDash() () from /usr/lib/compiz/libunityshell.so
 ?? () from /usr/lib/compiz/libunityshell.so
Title: compiz crashed with SIGSEGV in nux::WindowThread::GetWindowCompositor()
UpgradeStatus: Upgraded to precise on 2012-03-12 (0 days ago)
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