user30059: Trying to upgrade. I can open my wallet in Multibit classic without entering a password. I have never needed a password to open it and don't remember ever setting one up. I certainly have none recorded. But I can't export a key without entering a password. I tried sending the contents of the wallet to a new wallet in Multibit-HD but I don't know how much to send to allow for the transaction fee. There does not seem to be an "empty wallet" option.

user117: MultiBit developer here. You should be able to simply spend from your Classic wallet into your new HD wallet. Don't try moving private keys around - that's really easy to get wrong and is one of the reasons we wrote HD in the first place.
There are full instructions on upgrading on the MultiBit website: https://multibit.org/en/help/hd0.1/how-to-upgrade-from-classic.html

30059: <p>Trying to upgrade. I can open my wallet in Multibit classic without entering a password. I have never needed a password to open it and don't remember ever setting one up. I certainly have none recorded. But I can't export a key without entering a password. I tried sending the contents of the wallet to a new wallet in Multibit-HD but I don't know how much to send to allow for the transaction fee. There does not seem to be an "empty wallet" option.</p>
 117: <p>MultiBit developer here. You should be able to simply spend from your Classic wallet into your new HD wallet. Don't try moving private keys around - that's really easy to get wrong and is one of the reasons we wrote HD in the first place.</p>

<p>There are full instructions on upgrading on the MultiBit website: <a href="https://multibit.org/en/help/hd0.1/how-to-upgrade-from-classic.html" rel="nofollow">https://multibit.org/en/help/hd0.1/how-to-upgrade-from-classic.html</a></p>
