migrate_favorites.py crashed with GError in __main__: Bad key or directory name: "/desktop/unity/launcher/favorites//type": Can't have two slashes '/' in a row

Bug Description

Binary package hint: unity

Upgrade from 10.10 to 11.04 resulting in this script crashing on first boot after upgrade completed.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: unity-common 3.4.0-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-2.29-generic 2.6.38-rc3
Uname: Linux 2.6.38-2-generic i686
Architecture: i386
CheckboxSubmission: 382fc2d94a87e02c6127f5f4800c2f6c
CheckboxSystem: b62ae224500b03a9fc2c9b6caf3feb14
CompizPlugins: [core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,gnomecompat,wall,ezoom,workarounds,staticswitcher,resize,fade,scale,session,unityshell]
Date: Thu Feb 10 07:04:47 2011
ExecutablePath: /usr/lib/unity/migrate_favorites.py
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/lib/unity/migrate_favorites.py
ProcEnviron:
LANGUAGE=en_US:en
PATH=(custom, no user)
LANG=en_US.UTF-8
LC_MESSAGES=en_US.utf8
SHELL=/bin/bash
PythonArgs: ['/usr/lib/unity/migrate_favorites.py']
SourcePackage: unity
Title: migrate_favorites.py crashed with GError in __main__: Bad key or directory name: "/desktop/unity/launcher/favorites//type": Can't have two slashes '/' in a row
Traceback:
Traceback (most recent call last):
File "/usr/lib/unity/migrate_favorites.py", line 174, in <module>
if (client.get_string('%s/type' % candidate_path) == 'application'):
GError: Bad key or directory name: "/desktop/unity/launcher/favorites//type": Can't have two slashes '/' in a row
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

Thanks for your bug report and help to make ubuntu better.
oh, interesting, can you please paste ~/.local/share/unity/migration_script.log if you have one?

also gconftool-2 -R /desktop/unity/launcher can be of help :)

gconf tool output:

:~/.local/share/unity$ gconftool-2 -R /desktop/unity/launcher
/desktop/unity/launcher/favorites:
favorites_list = [cheese,empathy,home,yelp,ubuntu-software-center,rhythmbox,launch-applications,app-thunderbird.desktop,app-gnome-terminal.desktop,app-firefox.desktop,app-cheese.desktop,,app-chromium-browser.desktop]
/desktop/unity/launcher/favorites/yelp:
priority = 5.0001001358032227
/desktop/unity/launcher/favorites/cheese:
priority = 2.0001001358032227
/desktop/unity/launcher/favorites/app-empathy.desktop:
priority = 1
/desktop/unity/launcher/favorites/ubuntu-software-center:
priority = 3.0001001358032227
/desktop/unity/launcher/favorites/app-evolution.desktop:
priority = 15
/desktop/unity/launcher/favorites/app-cheese.desktop:
priority = 1
desktop_file = /usr/share/applications/cheese.desktop
type = application
/desktop/unity/launcher/favorites/app-update-manager.desktop:
priority = 12
/desktop/unity/launcher/favorites/app-ubuntu-software-center.desktop:
priority = 7
/desktop/unity/launcher/favorites/app-chromium-browser.desktop:
priority = 5
desktop_file = /usr/share/applications/chromium-browser.desktop
type = application
/desktop/unity/launcher/favorites/app-time.desktop:
priority = 11
/desktop/unity/launcher/favorites/app-firefox.desktop:
priority = 4
desktop_file = /usr/share/applications/firefox.desktop
type = application
/desktop/unity/launcher/favorites/app-gnome-terminal.desktop:
priority = 3
desktop_file = /usr/share/applications/gnome-terminal.desktop
type = application
/desktop/unity/launcher/favorites/launch-applications:
priority = 8.0001001358032227
/desktop/unity/launcher/favorites/app-apport-gtk-mime.desktop:
priority = 10
/desktop/unity/launcher/favorites/app-yelp.desktop:
priority = 3
/desktop/unity/launcher/favorites/app-openoffice.org-writer.desktop:
priority = 11
/desktop/unity/launcher/favorites/app-rhythmbox.desktop:
priority = 5
/desktop/unity/launcher/favorites/app-gedit.desktop:
priority = 11
/desktop/unity/launcher/favorites/home:
priority = 7.0001001358032227
/desktop/unity/launcher/favorites/app-launch-applications.desktop:
priority = 6
/desktop/unity/launcher/favorites/rhythmbox:
priority = 1.0001000165939331
/desktop/unity/launcher/favorites/app-thunderbird.desktop:
priority = 2
desktop_file = /usr/share/applications/thunderbird.desktop
type = application
/desktop/unity/launcher/favorites/empathy:
priority = 6.0001001358032227
/desktop/unity/launcher/favorites/app-gnome-system-monitor.desktop:
priority = 14
/desktop/unity/launcher/favorites/app-nautilus.desktop:
priority = 6
/desktop/unity/launcher/favorites/app-synaptic-kde.desktop:
priority = 12
/desktop/unity/launcher/favorites/app-evince.desktop:
priority = 14

Thanks a lot!
Waow, that's surprising that unity mutter can have some "empty" launcher. The errors comes from:
favorites_list = [cheese,empathy,home,yelp,ubuntu-software-center,rhythmbox,launch-applications,app-thunderbird.desktop,app-gnome-terminal.desktop,app-firefox.desktop,app-cheese.desktop,,app-chromium-browser.desktop]

(see the ,,)

Ok, I've added some security for that in the migration tools (for unity mutter, netbook-launcher and gnome-panel). That will be part of next release.
Thanks a lot for your report :)

This bug was fixed in the package unity - 3.4.4-0ubuntu1

---------------
unity (3.4.4-0ubuntu1) natty; urgency=low

* New upstream release:
- add systray support (LP: #655140, #596879)
- Dragging and holding a selection over an entry in the Launcher should
spread out windows belonging to that application (LP: #607796)
- Unity shouldn't allow to Quit itself (LP: #705536)
- Launcher should not be locked in place until the pointer is actually in
the corner (LP: #706146)
- Top Panel does not respect GTK theme (LP: #663524)
- Update Unity-Panel Style implementation (LP: #685830)
- Add keyboard shortcut for the panel (LP: #701663)
- clicking on the ubuntu logo doesn't close the dash dialog (LP: #708762)
- "Escape" doesn't close the dash screen (LP: #711195)
- migrate_favorites.py crashed with GError in __main__: Bad key or
directory name: "/desktop/unity/launcher/favorites//type": Can't have
two slashes '/' in a row (LP: #716382)
- Icon state does not revert when remote libunity user closes (LP: #716863)
- transparency in places window a bit too high (LP: #718357)
- Navigating between menus briefly gives focus back to applications
(LP: #690714)
- pace on cursor navigation mode should act like middle click (LP: #717213)
- Do not switch to fallback menu on mouse-over (LP: #703555)
- Fix the panel service and menus atk object hierarchy (LP: #704350)
- Expose home panel button via ATK (LP: #715295)
* debian/source_unity.py: enhanced apport hook for incoming compiz hook
* debian/control:
- bump nux and libunity-misc dep
-- Didier Roche <email address hidden> 2011年2月17日 20:37:42 +0100