Thanks to Drashna and the support team at Covecube everything is back to where it should be. I uninstalled and reinstalled DrivePool and all is well.
I have no hestitaion in recommending Covecube software for WHS and WS2012E even though I have a couple of issues forum members or support have helped me get back on track quickly and without the lose of data (maybe another grey hair or two to add to the many, but who is counting).
Thanks again
Di