You are getting this in more than one project, all or some?
Have you tried opening one of the sample projects? Same?
All projects local and no source control involved?
I have seen this after renaming a project but not otherwise.
There I simply right clicked and selected Restore. After that I had
no more broken link problems so I think you will be OK.
Please back up at least one of the projects before you repair
it in case it is needed for investigation. I don't think anyone
else has reported this issue.
What you see in the list is the topic that is missing. If you
right click and select Edit, the topic with the link to the missing
topic will be shown so that you could remove the link if that was
the objective, which in your case it is not.
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