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Upgrade WP Error (1 post)

  1. AlvinYap
    Member
    Posted 9 years ago #

    Hi all, I've been using WP since September and just a couple of hours ago, I upgraded from 1.5 to 2.0 - now I've got this error when I try to view my blog:

    Fatal error: Call to undefined function: is_user_logged_in() in /home/alvinyvo/public_html/wp-includes/classes.php on line 1566

    When I try to log in, I get this error:

    Warning: main(/home/alvinyvo/public_html/wp-includes/registration-functions.php): failed to open stream: No such file or directory in /home/alvinyvo/public_html/wp-admin/admin.php on line 12

    Fatal error: main(): Failed opening required '/home/alvinyvo/public_html/wp-includes/registration-functions.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/alvinyvo/public_html/wp-admin/admin.php on line 12

    1. I didn't erase the old WP files, I just overwrote them
    2. I didn't back up my index.php - I didn't back up anything, just overwrote them
    3. I am using Tiger-plugin for the interface

    Could anyone please help me to work around this? I'm tempted to re-install but use my old Database (can I do that?) but I don't want to make it worse than it is

    Thanks

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