iTunes 12.3 download fails
I have been trying to update iTunes to 12.3 (Mac) since I already updated my iPad to iOS 9 wihotut realising it would no longer connect to my current iTunes. (Why does Apple not make this clear when they push you to upgrade your iPad OS?!)
I have both Yosemite 10.10.5 and Mavericks 10.9.5 on my Macbook Pro, on two SSD drives, but the update installation fails in both OS.
I follow the Apple instructions, by going into my iTunes and then 'Check for Updates', which gives the dialogue box asking if I want to download 12.3. So I click on 'Download' which then launches my App Store application, but the iTunes download never shows up there for me to install. Searching for it from the App Store app directly also fails.
This seems very odd. What am I doing wrong?
I have tried this in bothYosemite and mavericks.
Perhaps it thinks I have already downloaded it, but in that case, where is it, and why doesn't iTunes update automatically next time I start it up?
thanks for any advice...
Jamie
MacBook Pro (17-inch Mid 2010), OS X Yosemite (10.10.5)