Hi stuhal1, what message do you get when trying to restore a backup?

Has Firefox ever displayed the message in the title of this support article: Fix "The bookmarks and history system will not be functional" error message?

There was no error msg, when I clicked on the date nothing happened, I closed the page and tried again but the same thing happened.

About 2 days later they were suddenly there, I don't know what I did.

You must be living right, as they say. Hopefully it was a one-time glitch.