This bug was fixed in the package ubuntustudio-meta - 0.33
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ubuntustudio-meta (0.33) intrepid; urgency=low
* Refreshed dependencies
* Added cups-driver-gutenprint to desktop
* Added ffmpeg to video [hppa]
* Removed cupsys-driver-gutenprint from desktop
* Moved
** Attachment added: Dependencies.txt
http://launchpadlibrarian.net/15735337/Dependencies.txt
** Attachment added: DpkgTerminalLog.gz
http://launchpadlibrarian.net/15735338/DpkgTerminalLog.gz
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package ubuntustudio-audio 0.28 failed to install/upgrade: subprocess
post-installation