I updated to your newest version of autorank but now it keeps telling me to update it to an older version.

Autorank v4.1 is now available for download!
Available at: http://servermods.cursecdn.com/files/2497/963/Autorank-4.1.jar

I think that it happened because 4.1 version is beta and high versions are releases.

I'll look into this. For now, you may ignore the message or disable it.