Update (12/01/2015): Version 184.108.40.206 fixed the issues referenced below. The version that’s current at the time of this update is version 220.127.116.11.
The SQL Server Engineering Team recently acknowledged that there’s an issue with the recently released SQL MP version 18.104.22.168, and have issued a temporary workaround for the issue here: http://blogs.msdn.com/b/sqlreleaseservices/archive/2015/10/16/released-system-center-management-pack-for-sql-server-and-replication-6-6-2-0.aspx.
If you’ve already downloaded this MP version and are seeing this issue in your environment, you are advised to apply the workaround published above. If however, you’d rather revert to the previous MP Version (SQL MP 22.214.171.124), you can get that from the download center here: http://social.technet.microsoft.com/wiki/contents/articles/16174.microsoft-management-packs.aspx?PageIndex=6
I have also uploaded the files below, and to One Drive here: http://1drv.ms/1OYdRk8