Security Preferences: Cannot select "Remember Logins"

I am not able to select "Remember logins for sites" or attempt to create a first-time master password without getting an error message box. The "Remember logins" checkbox is grayed out, and above the boxes where I fill in my created master password, the grayed-out box says the "current password" is "not set." I'm an ordinary user, new to Tor. Thanks.

Trac:
Username: c8toruser