“You are not allowed to edit this selection because it is protected.” but only since Office 2013?

Question

We\'ve had these few lines of code running happily in our applications for several years (and in several versions of Office, 2003, 2007, 2010 etc). Purpose is to perform a kind

Answer 1

In my case, this error was caused by the presence of content controls with .LockContentControl == true.

To work around this issue, I built an IEnumerable<ContentControl> of the content controls with this property set to true, and set .LockContentControl = false. Now I can .InsertColumnsRight() without a problem. Then I restore the .LockContentControl = true for all content controls in my collection.

Answer 2

For me, the issue was similar to Tim Dols answer, but I needed to unlock the content of the content control., which is the LockContents property: mycontentcontrol.LockContents = False

For @CrazyIvan1974, the problem with that solution is that Add creates a new document. if you point at an existing document when using Add, it doesn't load the document, it creates a new document using the original as a template. That can disconnect templates and add-ins, really messing you up if you save over the original