Not saving new passwords
 

I've recently moved a 3.8.7 pl3 board to a different server, and after the move, and I can't seem to add any new accounts properly. When adding any new user accounts from the admin control panel, I fill in the user name and password - but when I try to log in with this info, I get the "You have entered an invalid username or password etc.," message. When I try to use the Lost Password Recovery Form, I get "Could not find phrase 'invalid_redirect_url_x'."

I have disabled the plugin/hook system, but that doesn't seem to help. Members who have forgotten their passwords can't log in either - even when I have entered a new password in their user account via the admin control panel.

Any ideas???