What was your account on your other computer before you migrated from your Mac Pro? From the list you provided I see:
Gordon Atkinson - admin user.
Kyla - admin user.
tests - standard user.
Guest - we can forget about this one.
Gordon Atkinson, you say, is the current user. I don't see any other user account for you that might have been migrated, so I'm assuming this is your original account on the Mac Pro.
You need to tell me which of your accounts is the one you are trying to use files on that require you to authenticate. Now under normal circumstances you should not be able to access any other user on the computer. Doing so would require you to know the passwords for the other users.
Maybe you can give me some background on how you transferred data from the Mac Pro to the MBA.
BTW, is the user account information you provided for the Mac Pro or the MB Air? I need to know for the MBA, not the MP.
This is a long story:
I had a Macboodk pro and thought I would like to try a Mac Air. When I purchased the Mac Air, I also purhased a time maching with the idea that I would transfer my Macbook Pro to the Time Machine. I thought at the same time I would give my daughter Kyla my old Mac Book Pro. I am probably not experienced enough to do this all on my own but ventured forth anyway. The first step I took was to transfer my Macbook Pro info to the time machine. (This may have been my first mistake as I believe I should have initiated my time machine with my new Mac Air (this caused me some grief down the road). I was having issues with time machine and in talking with the local store rep (Mac Boutique in Nanaimo) I decided to migrated the information directly from my MBP to my MBA. I then cleared the MBP and migrated Kyla's information to her new (my old) Macbook Pro.
Gordon Atkinson is the current user and this is the original account from the Macbook Pro.
I am trying to use my files now on my MBA which came from my MBP and am contantly having to authenticate with my password. Another issue is that all my files are now locked (they were not locked on my MBP and I am constantly unlocking and changing permissions).
What is BTW? I have never changed my user account, it has been the same on every mac I have had.The MBA shows Gordon Atkinson as the user account.
"BTW" means By The Way.
OK. So, let's begin getting some things clear in my head.
You now are using your new MBA. You transferred your files from an older MBP that you gave to Kyla. You then erased the MBP you gave to Kyla and transferred her account to the MBP. Kyla's account had been backed up to the new Time Capsule using Time Machine. You used Time Machine to migrate Kyla's account to the MBP.
You then migrated your account from the Time Machine backup to your new MBA. Subsequently, you've started having these permissions problems in your account. However, I assume there are no problems with Kyla's account.
So, do I have a correct idea of the situation? If I do then I think that the problem stems from either how the Time Machine backups were made or how they were migrated. I believe you can set your computer right as follows:
Boot into single-user mode and at the prompt enter these commands pressing RETURN after each:
mount -uw /
chown root:admin /
chmod 1775 /
After rebooting open Terminal in the Utilities folder. Paste these commands into the Terminal application to avoid typos:
Press RETURN. Enter your admin password when prompted. It will not be echoed to the screen. Press RETURN again. Now paste each of the following at the prompt and press RETURN after each.
chown root:admin /Applications
chmod 0775 /Applications
chown root:admin /Library
chmod 1775 /Library
chown root:admin /System
chmod 0775 /System
chown root:admin /Users
chmod 0775 /Users
chmod -R -N /Applications
chown -R :admin /Applications/*
I suggest you first print these instructions out using a large mono-spaced font so you can read them correctly. There are spaces in the lines that may not be easily observed.
Now, do the following:
Repair the Hard Drive and Permissions - Lion/Mountain Lion
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported then click on the Repair Permissions button.
Select Terminal from the Utilities menu. Enter resetpassword at the prompt and press RETURN. Follow instructions in the dialog window that will appear, but do not reset your password. At the bottom of the dialog window will be an option to restore permissions in the Home folder to default. Click on that option.
Select Restart from the Apple menu.