The current version is 2018.01.01. One semi-recurring problem with unRaid's plugin manager is that it doesn't check for updates immediately prior to installing, in which case the previous version may or may not still exist on github. In this case when unRaid checked for updates, the last version was 2017.12.31. However there also existed a 12.31a Most of the time in that case, I stop 12.31 from deleting itself from the server, but obviously I missed it this time. Either way, a new install should work for you.