Broken notifications when updating to GrowlTunes 3.0 from an older version

What steps will reproduce the problem?
1. Update to GrowlTunes 3.0 from an older version with existing preferences.
2. Notice no notifications are being shown.
3. Search the web for an answer.
4. In GrowlTunes preferences, discover the "Media Type" pane where you can/must 
tick different media types ("Music", Music Video" etc.) to enable notifications.
5. Notice that notifications being shown don't include any info.
6. Discover you need to drag some labels around in the same "Media Type" pane 
for song info to display in notifications. I didn't bother but resorted to the 
workaround of deleting old preferences (see below).
7. Find out the issue has been reported before: 
https://twitter.com/deliriousguy/status/381063729699254274.

What is the expected output?
Notifications working out of the box when updating from an older version.

What do you see instead?
Nothing

What version of the product are you using? On what operating system?
Growl 2.1.3, GrowlTunes 3.0, OS X 10.9

- Workaround -
Deleting two preference files in 
~/Library/Containers/com.growl.GrowlTunes/Data/Library, 
com.growl.GrowlTunes.plist and com.growl.GrowlTunes.plist.95Kk59R, fixed the 
issue for me. 

I would argue most users won't try troubleshooting preferences and if they'd 
try they'd look in ~/Library/Application Support and ~/Library/Preferences as 
they are accustomed to. Apparently, the ~/Library/Containers location is due to 
sandboxing 
(https://developer.apple.com/library/mac/documentation/Security/Conceptual/AppSa
ndboxDesignGuide/MigratingALegacyApp/MigratingAnAppToASandbox.html).

Original issue reported on code.google.com by Robert.V...@gmail.com on 31 Oct 2013 at 6:33

reubano / growl

Broken notifications when updating to GrowlTunes 3.0 from an older version #620