I can see your comments now. Changing comment sort order from default Hot causes the problems.

Yes, I’ve just confirmed that as well. Previously I had change comment sort order from default Hot to Old but hadn’t realised this was the cause. Uninstalled and reinstalled Boost fixed things. Now that I can see comments and your reply I too can confirm the same thing. Sort from Hot to Old and I see no comments but get errrors. Change Comment sort back to default Hot and it works!

Fixed by clearing data, uninstall and reinstall. I can see all comments without errors.

Fixed. Cleared all data, uninstalled, reinstalled and now it works; I can see comments.