I've purchased LR6 and have tried to download it last night. Left laptop on overnight to complete download but still shows I have over 16 hours for the download to finish. Is that normal?
My Mac is new, so speed and memory space should not be a problem. Would appreciate your comments. Thanks!
That seems quite long but it will depend on your connection and internet speed. Try getting LR6 from the link below. After installation download the 6.4 update.
Make sure a firewall or internet security/anti-virus software is not blocking the download. You could temporary disable that whilst installing Lightroom.