Thank you for your reply, burnout.
Your fix seems to work for alphabetical ordering.
But my problem is a little different from that.
I do not want to order them alphabetically.
I just want to move them around as I please or in other words order them as I want.
That does work but when I close and open Opera it is back to what it was before.
So: I can order/ move the bookmarks around but they reset to the order they were added after I restart the browser.
PS: I have the same problem with the folders for the bookmarks too now.
Example: I have the folders food, drink and shopping.
I want shopping to be the folder at the top with food coming second and drink coming third.
But, when I restart Opera, they are in a "random" order (however Opera sorts them by default).