Google Music Manager no longer running

[ckny]

I'm having a problem with Google Music Manager on my Mac Mini and can't seem to find an answer anywhere.

I've had the program installed for a while. Last I checked, it was running fine under Lion and uploading my music in the background. I went to look at it today because I finally got around to using Google Music and noticed some recent music wasn't uploaded. I should say that I upgraded to Mountain Lion over the summer but never noticed if Music Manager worked before/after the install.

I can't find the icon in my menu bar. I went to the system preferences and when I click the Music Manager icon, the screen briefly flashes the settings and then goes to a screen that says Google Play and "Music Manager is not currently running". I can click a button that says "Start Music Manager", but nothing happens after that. I opened Activity Monitor and see it running. If I quit the process and then click the button again, it shows in Activity monitor again. But nothing else changes. The window doesn't change and nothing shows in the menu bar.

I tried (twice) to uninstall and reinstall as per the directions from google. No dice. Anyone else ever experience anything like this? I can install fine on another Mac running Mountain Lion. However, I can't install it under a test account that I create on the original Mac Mini - same problem. I'm thinking there's a file somewhere thats corrupting something but can't find any answers or suggestions.

Here's the instructions I used to do a manual uninstall:
Mac
In the Finder, choose 'Go' > 'Go to Folder'
Type in ~/Library/PreferencePanes and click 'Go'
Locate 'MusicManager.prefPane' and drag it to the Trash
In the Finder, choose 'Go' > 'Applications'
Locate 'Music Manager' and drag it to the Trash
If you'd also like to delete remaining music files associated with Google Play, please follow the instructions below:

In the Finder, choose 'Go' > 'Go to Folder'
Type in ~/Library/Application Support/Google and click Go.
Locate the MusicManager folder and drag it to the Trash.
Choose 'Go' > 'Go to Folder'
Type in ~/Library/Preferences and click Go
Locate the preference file ~/Library/Preferences/com.google.musicmanager.plist and drag it to the Trash