APP Store Error when downloading Mavericks

Question

I am unable to download Mavericks from the App store.
I see the following message in my Console:
3/20/14 9:31:54.696 PM com.apple.SecurityServer: Failed to authorize right 'system.install.apple-software' by client '/System/Library/PrivateFrameworks/PackageKit.framework/Versions/A/Resources/in stalld' [323] for authorization created by '/Applications/App Store.app' [492]
3/20/14 9:31:54.717 PM com.apple.SecurityServer: Failed to authorize right 'system.install.software' by client '/System/Library/PrivateFrameworks/PackageKit.framework/Versions/A/Resources/in stalld' [323] for authorization created by '/Applications/App Store.app' [492]
I have tested my Apple userID and password … it's ok.
I am running 10.7.5 on a Apple MacPro 5.1
one other piece of information:  I was able to initiate the download 2 days ago, but my internet connection failed and I had to reboot. I have been uable to resume or re-initiate the download/upgrade to Mavericks since.
Thanks in advance.

Answer 1

Step 1
Open LaunchPad and find the icon of the app "Install OS X Mavericks." There will be a small progress bar below it. Click the "X" to stop the download, then try again
Step 2
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem. You must hold down the shift key twice: once when you boot, and again when you log in.
Note: If FileVault is enabled, or if a firmware password is set, or if the boot volume is a Fusion Drive or a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to boot and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal boot may also be somewhat slow.
The login screen appears even if you usually login automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem?
After testing, reboot as usual (not in safe mode) and verify that you still have the problem. Post the results of the test.