For several months now I have had the same very minor issue. Occasionally I get the famous red exclamation mark "!" badge in Chrome extension. 1P works fine so I can ignore it until I need to sync properly. Then I follow the instructions in the user guide article "Troubleshooting the new browser extensions" here: http://help.agilebits.com/1Password_Windows/helper-not-connected.html
What I usually end up doing is re-installing the browser extension. Then the badge goes away, for a few hours or a day or so. But later it comes back.
The desktop app is the latest version, Chrome is Version 28.0.1500.72 m (up to date).
Running Windows 7, MS Security Essentials (up to date), Windows Firewall on with default settings.