caja crashed with SIGABRT in g_assertion_message()

[checkpoint charlie]

meh

ProblemType: Crash
DistroRelease: Ubuntu 16.04
Package: caja 1.12.7-1
ProcVersionSignature: Ubuntu 4.4.0-17.33-generic 4.4.6
Uname: Linux 4.4.0-17-generic i686
ApportVersion: 2.20.1-0ubuntu1
Architecture: i386
CrashCounter: 1
CurrentDesktop: MATE
Date: Mon Apr 4 14:16:56 2016
ExecutablePath: /usr/bin/caja
InstallationDate: Installed on 2016-03-30 (5 days ago)
InstallationMedia: Ubuntu-MATE 16.04 LTS "Xenial Xerus" - Beta i386 (20160323.1)
ProcCmdline: caja
ProcEnviron:
 LANGUAGE=en_US
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
Signal: 6
SourcePackage: caja
StacktraceTop:
 raise () from /lib/i386-linux-gnu/libc.so.6
 abort () from /lib/i386-linux-gnu/libc.so.6
 g_assertion_message () from /lib/i386-linux-gnu/libglib-2.0.so.0
 g_assertion_message_expr () from /lib/i386-linux-gnu/libglib-2.0.so.0
 caja_window_pane_slot_close ()
Title: caja crashed with SIGABRT in raise()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 g_assertion_message () from /tmp/apport_sandbox_itfkTP/lib/i386-linux-gnu/libglib-2.0.so.0
 g_assertion_message_expr () from /tmp/apport_sandbox_itfkTP/lib/i386-linux-gnu/libglib-2.0.so.0
 caja_window_pane_slot_close ()
 caja_window_slot_close ()
 mount_removed_callback ()