shotwell crashed with SIGABRT in raise()

In background was a download from dropbox. new installed system 12.04

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: shotwell 0.11.91-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-15.24-generic-pae 3.2.5
Uname: Linux 3.2.0-15-generic-pae i686
ApportVersion: 1.91-0ubuntu1
Architecture: i386
Date: Sun Feb 12 23:22:18 2012
ExecutablePath: /usr/bin/shotwell
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20120103)
ProcCmdline: shotwell /home/username/Dropbox/Photos/2012-02-12_14-39-56_213.jpg
ProcEnviron:
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
Signal: 6
SourcePackage: shotwell
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
 ?? ()
Title: shotwell crashed with SIGABRT in raise()
UpgradeStatus: Upgraded to precise on 2012-02-12 (0 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo