Help! Cannot unlock wallet.

In the Reddcoin QT wallet, when I go to Settings -> Unlock Wallet, I immediately am presented with the following message: “This operation needs your wallet passphrase to unlock the wallet.”
I am never prompted with the dialog to enter my passphrase (!), only the message in the screenshot above.
I’m using version v2.0.0.0-g71819f2-beta with an old encrypted wallet. The balance displays fine, I just can’t unlock for staking, etc. Pls help!

See my reply to your question over here