I'm just going to bump this topic for the sake of newer users to say one more thing:If you use a Live OS like TAILS and you generate a key pair, it will disappear after being used for the first time. Similarly if you decide to switch to another system like Liberte your private key will not automatically be copied over.As such do make sure you keep a back up of your public and private key somewhere safe such as on an encrypted USB stick. I don't mean to moan but several times in the past week I've been asked to resend messages to people who've lost their private key - in one case no less than six times to the same person. If anyone needs any help with this, please let me know, I'd be more than happy to show you how to do this.All the best,V.