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Quote:
Originally Posted by Tom Bunch View Post
It would be a great help if you could provide us with a starting document and a set of steps starting with "launch and open this document" and ending with "see the error!".

Done.
The problem didn't occur as often today. I have modified my way of working to not have so many grouped tasks duplicated. I'm using single tasks to represent the more detailed group. I've working about an hour, saving as I go, and was moving the position of the a task on the timeline. I went to undo and it throws the error. Once you have the error, there is no more undo.
Other programs running: Excel, Evernote, Entourage, Firefox.
Brian