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How to downgrade from 3.1 (6 posts)

  1. Christiaan
    Member
    Posted 3 years ago #

    I'm setting up a multilingual site that needs to be up and running now and I stupidly upgraded to 3.1 without thinking, which is incompatible with qTranslate.

    I tried to downgrade by overwriting wp-admin, wp-includes and root files (minus config) with previous files and then refreshed website and upgraded database. Website appears okay but it's giving me this error when I try to log into the backend:

    Fatal error: Call to undefined function set_current_screen() in /home/content/html/wp-admin/admin.php on line 129

    Any ideas?

  2. Samuel Wood (Otto)
    Tech Ninja
    Posted 3 years ago #

    You failed to downgrade all the files properly. Make double sure that you uploaded ALL the files.

    Specifically, set_current_screen was in 3.0, in the wp-admin/includes directory (I think, have to go check to be sure).

  3. keesiemeijer
    moderator
    Posted 3 years ago #

    Downgrading is always tricky. Do you have recent backups or does your host make regular backups of your database?

  4. Christiaan
    Member
    Posted 3 years ago #

    @Otto, thanks I'll try again.

    @keesiemeijer no I didn't have backup as I had only just installed, configured and added content. ALWAYS backup before upgrading!! damn it, hehe.

  5. Christiaan
    Member
    Posted 3 years ago #

    @Otto, thanks again for the push, that did the trick :)

  6. Selwyn Nogood
    Member
    Posted 3 years ago #

    I've posted a help guide on an easy way to downgrade wordpress 3.1 but keep any content you've added since upgrading.

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