dependencies not moving

[Scott Borth]

I'm having a problem with task linking. i have an issue
where two tasks are linked (FS with no lag time). The
second task does not get updated when the first task
changes.
The second task has the task constraint "ASAP". No
resources are assigned and all %complete is zero. The
calculation setting for the mpp is "automatic".
In one instance of removing the link (in the effort of re-
linking them), the start date of the first task moved to
1/1/1984, even though the project start date is 1/1/2003.
This is part of a large mpp, but the tasks i am referring
to have no other predecessors/successors. They are part
of a larger summary task, though, which has no
predecessors/successors.
Other subtasks are not affected. In fact, even the
summary task bar does not show the effect of the other two
tasks (it's not stretched out from 1984 to 2003). It just
resides over the unaffected subtasks - hence my possible
conclusion of a corrupted mpp file.
Are there repair possibilities for mpp files or is there
another avenue of debugging that i'm missing?

Any help would be greatly appreciated.

Scott
..

 

[Scott Borth]

thanks for the response.

there currently are no links to/from the summary task to
other tasks. the only links are contained within the
summary task between the subtasks. no links extend
outside the summary.
i have some (unfortunately) potential for circular
relationships elsewhere, but i removed all links from the
summary task in question during my debug phase trying to
rule the circular relationship out.
this problem occurs even after removing all links from the
summary task.

Scott