I have just followed the link on the website to 'Downloads' and downloaded the installer file under the heading "v0.8.571 for Microsoft Windows". In Help/About MemoryCoin the version is given as v0.8.57.0-unk-beta. I note that on the main page the link is headed "Download MemoryCoin v0.8.561 for Windows".
Which version do I actually have, 8.570 or 8.571? Is there any real difference? The main menu bar includes Mining and Voting options.