If you are a heavy SharePoint user, there is a chance you are still running SharePoint Workspace 2010. Today, after months of this tool working flawlessly, I suddenly ran into some errors during syncing and thought I would share the resolution.
Details: Harmonica Version Not Found
I started with this error. After disconnecting the library and trying to reconnect, I received the CSI error 123 (below).
More info: http://support.microsoft.com/kb/2754412
Details: CSI error 123
I understand this can happen if temporary data is corrupted. I ran the following command on my 64-bit OS:
"%SystemDrive%\Program Files (x86)\Microsoft Office\Office14\groove.exe" /clean /all
At this point, all of my workspaces were removed from SharePoint Workspace 2010 and I had to click “Sync to SharePoint Workspace” from within the SharePoint navigation bar.
More info: http://support.microsoft.com/kb/982279