[TYPO3-english] Workspace configuration lost "Live" pages

[question.mark at comcast.net]

I am new to Typo3 and am very impressed with its capabilities.  I am experiencing a problem on a site we installed recently (Typo3 version 4.2.6.  The site install came with a sample site "out of the box" which worked fine as installed.  Although I am new to Typo3, I am very experienced in server-based databases and the fundamentals of dynamic websites.

I recently have been reading about workspaces and workflow, and with the help of Marlie's tutorial (http://www.mcuniverse.com/Usergroups-Custom-WS.1820.0.html) I created several new usergroups, several new users and set permissions at the top level element of the site.  At some point, however, the live site disappeared and now displays the error "No pages are found on the rootlevel!"  I can, however, successfully generate a review website link that does work.

As the admin user, I can see three workspaces, LIVE, Draft, and 1:Editor Workspace.  I see the full tree of pages no matter which workspace is active.  However, when looking at the configuration on each page in the tree (Extended tab), there is a "Workflow state" section that has a dropdown list showing [INVALID VALUE ("1")] as its only entry.  This looks suspicious ... 8^)) ...  But I haven't a clue how to fix.  There are no pages listed to publish from either draft workspace.

I suspect where I strayed from the happy path is trying to configure workspaces on an existing site rather than starting from scratch.  Is there a way to fix this for the existing page tree?

     Thanks,

     --Mark