WD Utilities (Mac) Can't Find My Book Duo

I updated to the latest Mac version of WD Drive Utilities, and the installer erased my previous version.
Drive Utilities can not find my My Book Duo, which is set up as a 2x4 TB Raid 1.
The older version worked but I foolishly thought the newer version would be new and improved. Silly me.
Is there an archive of older WD Drive Utilities?