"Not enough information to check signature validity" error

Hello, I have this problem when I tried to verify the .ova vs .asc files on Windows 7 x64, can anyone help?

i donate this screenshot under cc0 Creative Commons — CC0 1.0 Universal

Has been sorted out on irc.

Can someone please repost just the relevant gpg window? I am ignorant about graphic manipulation tools. Then this could be added to documentation.