Just noticed that when I upgraded 1Password from 6.4.377 to 6.5.401 on Windows 7 several days ago it left both versions installed. I uninstalled the older one via control panel. After this 1Password would not start, I think because shortcut in Start menu pointed to the wrong place. I deleted this shortcut and pinned v 6.5.401 to the Start menu. It still won't start - "Problem with shortcut. The parameter is incorrect"
Edited to add:
1Password Version: 6.5.401
Extension Version: 4.6.4
OS Version: Windows 7 Home Premium SP 1
Sync Type: login to Agilebits
Firefox Version: 53.0 (32-bit)
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