Error: "Unable to save item." when saving a new password in the browser

Using Chrome browser beta extension 2.6.1 and FireFox extension 2.5.1, I am experiencing the same issues: 1) When trying to save a login from a site, I receive an error "unable to save item", and 2) the extension is not updating recent changes. That is, when I make an update on the desktop app, it shows up on the browser (1password.com) but not the extension.

The only way I can get the extension to work is to logout of the extension and re-log in. Then I am able to save new items and see the updates. The next day, it stops working again.

I have tried clearing cache, reinstalling the extension, but nothing is working. I do not have desktop integration enabled. I've also tried logging into the web interface while trying to add or update a password with the extension, still no joy.

Any ideas? Thanks.

1Password Version: Not Provided
Extension Version: Not Provided
OS Version: Not Provided
Browser:_ Not Provided