thunderbird count of new messages and launcher fails

Previously used "Messaging Menu and Unity Launcher integration" extension 0.9.3 by Mike Conley. A count of messages per mail folder was displayed in Unity messaging drop-down and mail envelope would turn blue. clicking on a folder would bring that folder up. When this extension became integrated in Thunderbird the notifications in the Unity Mail area began to fail and generally only show new messages in the Inbox. Attempted to disable 0.9.3 extension and count of Inbox messages no longer is displayed; envelope no longer turns blue. Used Ubuntu Software Center to Remove thunderbird-globalmenu, rebooted machine, re-installed, then rebooted again. Still not seeing the notifications.

Please suggest repair/reinstall steps that might recover the great functionality initially experienced in this extension as it applies to Thunderbird.

Linux 3.2.0-27-generic #43-Ubuntu SMP Fri Jul 6 14:25:57 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

Possibly related messages from error console:

Timestamp: 08/03/2012 12:16:55 PM
Warning: Error in parsing value for 'cursor'. Declaration dropped.
Source File: https://launchpad.net/globalmenu-extension/+timeline-graph?
Line: 0

Timestamp: 08/03/2012 12:13:30 PM
Warning: WARN addons.xpi: Download failed: [Exception... "Component returned failure code: 0x8052000b (NS_ERROR_FILE_CORRUPTED) [nsIZipReader.open]" nsresult: "0x8052000b (NS_ERROR_FILE_CORRUPTED)" location: "JS frame :: resource:///modules/XPIProvider.jsm :: AI_loadManifest :: line 6148" data: no]
Source File: resource:///modules/XPIProvider.jsm
Line: 6148

Timestamp: 08/03/2012 12:10:29 PM
Warning: Expected declaration but found '*'. Skipped to next declaration.
Source File: https://launchpad.net/+icing/rev15734/combo.css
Line: 8