Rich Text Editor Item - after restoring backup dont show content

I have a little problem. I create an item of type Document using Rich Text Editor. I save the DB and perform regular backups locally. Then I want to go back to my local backup for some reason I perform a db restore and then go back to the current db. It shows me this error (see screen shots). If I want to save the item it saves normally i.e. the content is still there but I don't know why it doesn't want to display. The Text items show normaly.