I'm attempting to install a Safari extension and I'm getting a error that says:
"1Password-4.2.5.safariextz is damaged and can't be open. You should move it to the Trash."
I thought maybe the 1Password was actually corrupted so I tried Ghostery and got the same error.
“Ghostery.safariextz” is damaged and can’t be opened. You should move it to the Trash.
I'm on Yosemite 10.10.1 - Safari 8.0