If you just purchased 1Password in the Mac App Store and you cannot go past the initial Welcome screen, there is likely a problem with the file permissions in your system.

We reported this problem to Apple (bug report #10094551) and it was confirmed as a bug in Time Machine that incorrectly prevents access to some key system files. You have a few options for fixing this problem on your Mac:

Option 1: Fix Using Troubleshooting Utility

Please download and run the Troubleshooting Utility

Select "Extended Attributes" tab and click "Repair Attributes" button:

Option 2: Fix Using Terminal

You can fix this problem using the following command in Terminal:

chmod -N /var/db/launchd.db/com.apple.launchd.peruser.`id -u`/overrides.plist

Step-by-Step Instructions

1. Open Launchpad

2. Open Terminal

In Launchpad click "Utilities" and then click "Terminal":

3. Copy and paste the command

Copy and paste this command:

chmod -N /var/db/launchd.db/com.apple.launchd.peruser.`id -u`/overrides.plist

4. Press Return key

Press the enter (return) key and you are done!

Extra Steps If Needed

The instructions above will fix the issue in the majority of situations so try launching 1Password and clicking Continue.

If 1Password works now, skip the remainder of these steps. If it is still not working, it's possible the "owner" of the above files are wrong. Here's how to fix this configuration issue:

1. Verify the owner is incorrect

Open Terminal and copy and paste these commands:

whoami
ls -FaBl@WeHd /var/db/launchd.db/com.apple.launchd.peruser.*/overrides.plist

You should see your username from the whoami command match the username of the file, as shown here:

If the names do not match, you are not the owner of the file and this needs to be fixed.

2. Setting yourself as the owner

Assuming you are not the owner of the file, copy and paste this command into Terminal:

sudo chown -R `id -u` /var/db/launchd.db/com.apple.launchd.peruser.`id -u`

You will be prompted for your password, as shown here:

The password being requested is your administrator password; if you are the administrator simply enter your OS X Login password. Enter your password and press enter.