I came up with an alternative solution.
Thank you for the link, Ryan. I will give it a try.
I guess I should start using a different browser.
Ryan,
Thank you so much for trying to help me.
I haven’t tried switching to a different theme, but I just noticed that I could insert a page in Firefox but not IE9, so I don’t think it’s theme-related.
I could live with this, but I wonder if there is anything I can do to get it to work again in IE.