Mac OS sierra app is damaged

Did you guys try to make a bootable Sierra installer and tried to install it that way?

Here's a helpful link with El Capitan instructions but it works for Sierra as well, you only need the apply the correct path and name of the installer.

Create a bootable installer for OS X - Apple Support

Tried both methods here: http://lifehacker.com/how-to-make-a-bootable-macos-sierra-usb-flash-drive-178685 3248 . Install Disk Creator couldn't unmount the USB drive and Terminal said it wasn't a valid installer file.

First you spend a lot of money, now a lot of time. It`s a bit cynical.

I don`t have a solution, I have a machine, 2015 iMac, they sell and they put on it SIPs and so many paranoids layers of precaution and protection, and I think they should know, after so many betas and tests, what might be going wrong with this upgrade. And this doesn`t seem an exotic issue, my guess is that more will come out with the very same complains we have here. As it seems Apple has change something in the way this OS upgrade works. I wish they had levelled the work with the publicity they made.

I tried with SIP disabled as well, no change.

This is what I found on my Installer log after the last attempt.

„Sep 22 17:13:41 xxx-iMac osinstallersetupd[847]: Could not find package ref in any source for: com.apple.pkg.BaseSystemResources

Sep 22 17:13:41 xxx-iMac osinstallersetupd[847]: Could not find package ref in any source for: com.apple.pkg.Essentials

Sep 22 17:13:41 xxx-iMac osinstallersetupd[847]: Could not find package ref in any source for: com.apple.pkg.OSInstall”

I don`t have any clue, and the only solution I see now to have Sierra installed is to proceed to a clean install and try to put things back from the Time Machine. Earlier I did a very smooth install on my wife`s MB Air, which make me reconsider some of my previous affirmations - it may be something related to my machine only, or my apple account, or who knows what.

Onyx maintenance. For me it worked, eventualy. As simple as that. 😕 Installer run as it should, the installation process lasted as announced.

So... no need to take anything out from the installer package.

What exactly did you do in Onyx Maintenance?

Well... Maintenance is a tab/ panel (you name it) in Onyx. You have there repair permissions (they say El Capitan doesn't need this anymore, but Onyx for El Capitan still has it so I run it), and rebuild indexes.

You know, macox is not an open source project so before trying to „hack” the installer, it is advisable to prepare/clean the machine so the new OS lays properly over the old one. I forgot this simple fact, my other day furry seems now ridiculous. Apple may have its sins, questionable sales polices/ choices or slappy jobs... or whatever (for instance bad firmware for newer Airports, or building expensive machines with strong processors and weak storage devices), but at least in this error on installer issue it was not company`s fault. A common maintenance procedure is required before launching the OS upgrade.

I get the same damaged message, I also don't get the option to download again and it doesn't show up in purchases. I have tried the "helpful" answer which allows me to go to install which says five minutes waiting but I also get the software cannot download to "null" and nothing happens. Completely stuck, I can't download again and I can't install what I've got.

Delete the copy you have (the damaged one) and download again.

I have, same result. Think I'll wait a while

Thank you very much! That worked for me after downloading 3 times and getting this error overtime.

Actually, I stand corrected. I got the installer to open, but then was told it couldn't install. I have a 13" 2014 MacBook Pro, so it's not like I fail the requirements. Gotta go, so I'll attempt this later.

I found a fix.

Check for mac updates on the app store and update.

After that the install worked fine🙂

Thanks, that worked for me. I don't understand what a Safari 10 update has to do with being able to update the OS, because that was the only update there. I specifically hadn't updated it because I had already done my final El Capitan clone and didn't want to change anything before the Sierra update.