01-03-2018 03:56 PM
had the same problem, on OSX 10.13.2 and it would not install at all. nothing.
what did work was i restart my comouter and logged in as Guest, went to Quick Software Download and re-downloaed the Quick software, follweded and "BAM", it worked and installed perfeclty it even ask for my user id and password, punched it in and good to go. once done. restared the computer and logged back into my Admin accouny and Quick is still there and work great :-)
hope this helps.