I'm a little late, however, I also got the exact same message. All you need to do is make sure VeadoTube mini is in your applications folder. You can do that by dragging it to that folder if it isn't already.
Then do ( command ⌘ + space ) and type in 'Terminal' another popup window should show up. Then just copy and paste this: xattr -cr /Applications/veadotube\ mini.app
press return and reopen the app. :)