pitivi crashed with AttributeError in _update_preview_cb(): 'PreviewWidget' object has no attribute 'preview_cache'

[JanG]

Dragged an MKV-File to the time line and on releasing the mouse button this error happened. PiTiVi remained open and doing the same action a second time worked flawlessly.

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: pitivi 0.15.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-14.23-generic 3.0.9
Uname: Linux 3.0.0-14-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
CheckboxSubmission: adfe912a677b9e8917f88ee91fbea346
CheckboxSystem: b1865df84255b8716d3bcc269ff410d1
Date: Thu Dec 22 20:38:22 2011
ExecutablePath: /usr/bin/pitivi
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: python /usr/bin/pitivi
PythonArgs: ['/usr/bin/pitivi']
SourcePackage: pitivi
Title: pitivi crashed with AttributeError in _update_preview_cb(): 'PreviewWidget' object has no attribute 'preview_cache'
UpgradeStatus: Upgraded to oneiric on 2011-10-30 (53 days ago)
UserGroups: adm admin audio cdrom dialout dip disk fax floppy fuse lpadmin netdev plugdev powerdev sambashare tape vboxusers video

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #864368, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.