Hi, just want to inform that the update from Mac OS 10.14.5 to 10.14.6 makes problem with finding the scanner of the 6515 work center. (Air Print) First I had PDF files where all scanned sides where destroyed, so I downloaded the latest driver from xerox. After installing that the scanner could not be opened. The windwos shows a massage, "open Scanner". Scanner does not answer. Did printer reset, new firmware, printer settings reset, Ram Parameter Reset, nothing worked I can compare with an other Mac, 10.14.5, there everything works fine. Now I will restore with time machine to the previous version. Think that is an update bug by Mac.