predecessors in MS project, why did they stop working?

[Amigo2k]

I have a large MS Project (2003) document that I update daily. The problem is if on task duration changes (say it take an extra 2 days), the other tasks linked to it do not change any more. I have checked a previously saved file (from a couple of months back), and it works fine. So I'm assuming that there is a box that needs to be checked for it to start working again. But where is it at?
-Ryan

 

[PDQBach]

It sounds to me as if you have some constraints on one (or more) of the tasks. If, for example, you have a Finish No Later Than constraint, your Finish date will not move out beyond that date.

Insert the columns Constraint Type and Constraint Date and check your data.

 

[Amigo2k]

Thanks for your input. It turns out I had a circular agrument that locked the whole thing up. -Ryan