pitivi crashed with TypeError in do_simple_paint() when applying fade to track

[NoahY]

Binary package hint: pitivi

When I add a fade button to a video track (double click on red line), no problem, but as soon as I try to move the opacity level down by clicking on one of the white squares, I get this error. Pitivi continues to work and even renders fine, but fades do not show up and are not rendered.

ProblemType: Crash
DistroRelease: Ubuntu 10.10
Package: pitivi 0.13.4-3ubuntu3
ProcVersionSignature: Ubuntu 2.6.35-19.26-generic 2.6.35.3
Uname: Linux 2.6.35-19-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Sat Aug 28 18:05:44 2010
ExecutablePath: /usr/bin/pitivi
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
InterpreterPath: /usr/bin/python2.6
PackageArchitecture: all
ProcCmdline: python /usr/bin/pitivi
ProcEnviron:
 LANGUAGE=en
 PATH=(custom, user)
 LANG=en_US.utf8
 SHELL=/bin/bash
PythonArgs: ['/usr/bin/pitivi']
SourcePackage: pitivi
Title: pitivi crashed with TypeError in do_simple_paint()
Traceback:
 Traceback (most recent call last):
   File "/usr/lib/pitivi/python/pitivi/ui/curve.py", line 261, in do_simple_paint
     cr.reset_clip(cr=cr, drawable=self.get_canvas())
 TypeError: gtk.gdk.CairoContext.reset_clip() argument 2 must be gtk.gdk.Drawable, not TimelineCanvas
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