Latest update (15.0.4737.1003) breaks MS Project 2013 Pro: linking not working properly

I have two machines, one with MS Project 2013 Pro at this level: 15.0.4737.1003 and one at this level: 15.0.4727.1003 and linking is not working with the former. See below:

Broken machine:

Working machine:

If I open the same file on the working machine, all is well, so it's not the file itself that is the problem. Any ideas? All was working well before the last batch of MS updates this week. Now sure what to check now... thx!
Jigs GatonAdvisor / ConsultantAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

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.

Dr. Thomas HenkelmannDirector Consulting ServicesCommented:

this looks as if the automatic scheduling would be switched off (you find this in File..Options..Scheduling). Please try a forced calculation first (hit the F9 key) to see if this solves the issue. Then set the calculation back to automatic.

Hope this helps

Jigs GatonAdvisor / ConsultantAuthor Commented:
As it turns out, the problem was caused by an errant add-in, that when installed, forces this behavior. Uninstalling the add-in does not fix the problem, but reinstalling MS Project fresh does. So, case closed on this one! thx.

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
Jigs GatonAdvisor / ConsultantAuthor Commented:
Turns out the problem was not with MS Project, but with an add-in.
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.