I have written a few articles in my blog which will help fix the most common problems. It’s called “Guide to fixing ToolBook problems” and you can start here:
http://www.toolbookconsulting.com/blog/entryid/26.aspx
Most notably I have put together an article on dealing with ToolBook corruption, here is a direct link:
http://www.toolbookconsulting.com/blog/entryid/29.aspx
Hope they are useful to you.
