Hello M880, Welcome to the Community! We've checked to see if there have been any previous reports of this error with our senior technicians in regards to editing journals, which there have not been. When QB has had the error elsewhere in the product it is usually a visual error. Can we ask you to clear the cache and cookies in your browser, selecting all-time in the date range, it will sign out QB, sign back in and then go to edit the transaction do you get the same message?