I am having the same exact problem after updating my Office 2003 with Office
2007. The whole Task Bar function is broken and I can't access my To Do list.

"Jan Groshan" wrote:

When I open Outlook (2007), I get a dialogue box that says "There was a
problem reading one or more of your reminders. Some reminders may not
appear." Additionally, when I click on Tasks, and then attempt to view my To
Do List, the screen says "Cannot display the folder", and when I click on
Tasks, the bottom right screen says "The operation failed. An object could
not be found." What happened? Is it easy to correct?