Invalid validation code

Hi
If I create a new user in the backend and set email verified as 0. When the user goes to login, it says "Your account is not active yet. Please verify your email." and there is a button to resend the email.
The email is sent and received but when clicking the link to confirm the email I get the error message: "Invalid validation code"
Is there code I need to add to the users page when setting up users in the backend to make this feature work?
Cec