When trying to import an old wallet (I don't remember if v4 or v5) I am asked for a password but the wallet was passwordless. If I press enter without typing the password I get error: -9 and nothing happens. Reproducible: Always
I'm sorry. It was already been reported (bug: 336406). It didn't show up in the search result. *** This bug has been marked as a duplicate of bug 336406 ***