gdebi fails to start with glib.GError (duplicate object ID's in ui file)

Binary package hint: gdebi

Cannot launch gdebi gui from terminal or gksu. Seeing the following error:

:~$ gdebi-gtk
Traceback (most recent call last):
  File "/usr/bin/gdebi-gtk", line 67, in <module>
    app = GDebi(datadir=data,options=options,file=afile)
  File "/usr/lib/python2.6/dist-packages/GDebi/GDebi.py", line 63, in __init__
    SimpleGtkbuilderApp.__init__(self, path=datadir+"/gdebi.ui")
  File "/usr/lib/python2.6/dist-packages/GDebi/SimpleGtkbuilderApp.py", line 33, in __init__
    self.builder.add_from_file(path)
glib.GError: Duplicate object id 'vbox3' on line 591 (previously on line 467)

ProblemType: Bug
Architecture: i386
Date: Mon Aug 31 12:34:33 2009
DistroRelease: Ubuntu 9.10
NonfreeKernelModules: wl
Package: gdebi 0.5.2
PackageArchitecture: all
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-8.28-generic
SourcePackage: gdebi
Uname: Linux 2.6.31-8-generic i686