It looks like you might have a bad installation. You might try uninstalling and then reinstalling InDesign.
You could try restoring InDesign preferences first because it's faster to test. Here's how:
Yeah, that's what I suspected as I've already tryed deleating the preferences with no luck and I couldn't find any other mention of the same problem. No time to reinstall now so I'll battle on without corners.
Just for fun, try resetting the workspace. Probaly won't work, but you never know.
No it doesn't work. Already tried that when the problem first appeared.
After uninstalling CS6 I tried to reinstalled from the application manager but CS6 no longer showed up as an option. No drama I thought and installed CC instead and everything went fine… until I realised there's a bigger difference between CS6 and CC and as usual it's not backward compatible. Grrrrr!
Spent ages looking for CS6 install but isn't on the Adobe site. Apple time machine to the rescue and after a quick restore I now have a working version of CS6 and CC
So I think we've all learnt something here, upgrades don't always go smoothly and kids, it's most important you always back up your system and apps, not just your files!
Now off to bed you go and remember to brush your teeth.
CS6 is still available for install. Here's where to download it if you have a CC subscription:
Go to creative.adobe.com. Sign in with your Adobe ID.
Scroll down to the description of InDesign. DON'T click Download. Click on the name "InDesign" to go to the InDesign description page.
Under "In This Version" there is a menu to select either InDesign CC or CS6. Choose InDesign CS6. Click Download.
CS6 is available.
From creative.adobe.com click on download center and click download for
InDesign. Scroll down to in this version and change the dropdown to CS6.
It doesn't matter where you click on that page as long as it's the
InDesign link. It takes you to the description page.