Cannot open books in Apple Books: "formatted incorrectly"
On my iMac I cannot open any books (nor samples) in the native Books app. Dialogue box says: "Cannot open book. It is formatted incorrectly or is not a format that Apple Books can open."
I restarted he computer. Updated from Monterey to Ventura, etc. and no success.
Books do open on my other devices. I have hundreds of books I read on the Mac.
Any suggestions would be welcomed.
Thanks.
iMac Line (2012 and Later)