Is 1Password compatible with Mountain Lion?
The short answer is: 1Password works great in Mountain Lion, and we love you. Send more cookies.
The slightly longer answer is: we released an update to 1Password 3 a while ago that ensures a smooth transition to Mountain Lion. As long as you are running the latest version of 1Password it should work great in Lion and Mountain Lion with support for the latest releases of Safari, Firefox, and Chrome.
Update 1Password 3.8 for Mac (from AgileBits website)
Update 1Password 3.9 for Mac (from Mac App Store)
Syncing with Other Macs
As long as all your Macs are running 1Password 3.6 or newer, you won’t have any trouble syncing. If you haven’t already set up syncing in 1Password, just follow the steps in our Dropbox sync setup guide and your 1Password data will always be up to date on all your Macs. You can set up your iPhone, iPad, and even Windows too!
Known Issues
For specific issues, be sure to search our Knowledge Base and our discussion forums to find a solution. It may already have a quick and easy solution. If not, please contact us so we can help. We are always here for you!