OS X User Account Belongs to Wheel Group
Mac OS X is a true multiuser operating system, with groups and a super user named root. The super user group is referred to as wheel. When upgrading old accounts in OS X Leopard, sometimes your user will be assigned to the wheel group, which will cause problems using 1Password’s extensions.
Aside from the security problems of having your user account assigned to the wheel group, the 1Password extension will not load into your browsers (except Firefox). The reason for this is that 1Password relies on Input Managers to integrate its functionality into the browser, and Leopard has strict rules on Input Managers, such as not loading Input Managers into any application running as a user that belongs to the wheel group.
Read on to learn how to fix this problem.
Check Super User Group Membership
To see if your user account is in the wheel group, open Terminal.app from /Applications/Utilities and type (or copy and paste) the following into the Terminal window:
dscl . -read /Groups/wheel GroupMembership
If you have the problem described above, the output you see will resemble this (where “james” is your short username):
GroupMembership: root james
Normal output should look more like this:
GroupMembership: root
Removal From Super User Group
To remove your username from this list, execute the following command (with your own username substituted for “james”).
sudo dscl . -delete /Groups/wheel GroupMembership james
Then run the first command above to confirm that it has worked correctly.
Restart Your Mac
After removing your username from the super user group, restart your Mac to ensure the change fully takes effect.