Microsoft Project 2010 Error - There was a problem linking these tasks

Hi all,

I get the following error in Microsoft Project 2010:

Error message
To replicate the error:
I copy a summary task and its contents into another summary task in the same project schedule
When I try to change any dependencies where I pasted the tasks, I get the error

I've spent the entire weekend so far and I cannot understand this.  
I'm pretty sure that I'm not creating circular references at all.
Please assist.

Thanks
ApplePietAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

PortletPaulfreelancerCommented:
Well you might be convinced you are not creating a circular  link, but you are. Simple as that.

It may be several tasks away from where you are looking, but it will be there somewhere.
0
ApplePietAuthor Commented:
Thanks Paul,

Is there any way that MS Project can tell me which tasks are the problem?

If it's able to detect a circular link, surely it must know which tasks are linked...

Thanks again
0
PortletPaulfreelancerCommented:
>>"I copy a summary task and its contents into another summary task in the same project schedule"

make a copy of your project file to "play with" (i.e. have a backup)

Almost all circular links are caused by placing dependencies onto summary tasks. Keep this in mind.

Resolving theses circular links can be painful and tedious.
Have both the Successor and Predecessor columns visible in the view

Then read these (both are short):
http://www.domorethanmanage.com/articles/2008/05/29/Resolvingcircularreferenc.html
https://epmxperts.wordpress.com/2012/04/18/quickest-ways-to-remove-circular-references-in-a-project-schedule/

so, basically
a.  you retain the predecessor data into a text column
b.  then clear the predecessors*
c.  then try to re-create the predecessors, when doing this the culprit links should be identified

*I would focus on links into or out of summary tasks, you could try just clearing these instead of clearing all
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Ultimate Tool Kit for Technology Solution Provider

Broken down into practical pointers and step-by-step instructions, the IT Service Excellence Tool Kit delivers expert advice for technology solution providers. Get your free copy now.

BembiCEOCommented:
Usually you get a message if you try to insert a circular relation.
So, if you typed something, it has to be the task you last edited.

If you insert the successor column beside the predecessor column, you should see, which task are related.,

By the way, linking on summary task is not best practice...
Best practice is, that every work item (and only the work items) has a predecessor and a successor (with the exception of the first one and the last one.
0
PortletPaulfreelancerCommented:
<<"By the way, linking on summary task is not best practice..."
yep: complete and absolute agreement
0
MacroShadowCommented:
No comment has been added to this question in more than 21 days, so it is now classified as abandoned.

I have recommended this question be closed as follows:

Split:
-- Paul Maxwell (https:#a41055785)
-- Bembi (https:#a41309254)


If you feel this question should be closed differently, post an objection and the moderators will review all objections and close it as they feel fit. If no one objects, this question will be closed automatically the way described above.

MacroShadow
Experts-Exchange Cleanup Volunteer
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Project Management Software

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.