Support » Plugin: User registration & user profile - Profile Builder » Update failure due to "invalid serial number"

  • I have Version 1.1.47 of Profile Builder Pro installed on my WordPress site. There is a green check mark next to the Serial Number field on the Register Your Version tab of the Profile Builder admin panel. When I click the check mark, “The serial number was successfully validated!” is displayed.

    On the WordPress plugin panel, underneath the listing for Profile Builder Pro, the following is displayed: “There is a new version of Profile Builder Pro available. View version 1.1.52 details. Automatic update is unavailable for this plugin.” When I click “”View version 1.1.53 details, the panel labeled “Plugin Information: Profile Builder Pro” is displayed with the following message on it: “ERROR You have entered an invalid serial number. Updates are only available for users with a valid serial number. Need a license key? Purchase one now from

    Why does one page say my license is valid and the other say that it is not and that I have to purchase one?

    How can I install the latest update?

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  • Plugin Author Cristian Antohe


    Hi Eric,

    Sorry for this issue. Previous versions of PB had a bug in the serial validation part.

    To try to fix it, delete the serial number, click save, paste the serial number again click save again and see if that fixes it.

    If not, you can always login to your account page and get the latest version from there:

    If you’re still having problems with it please let us know in the Cozmoslabs Forums: and we’ll have a closer look at it.

Viewing 1 replies (of 1 total)
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