• After solving the problem with logging in, next problem appeared (when I upgraded from version 2.0 to 2.6). When I log in, serie of new warnings appear:

    Notice: Undefined offset: 1 in /home/katolickhwylfcc3/html/wp-admin/includes/plugin.php on line 16

    Notice: Undefined offset: 1 in /home/katolickhwylfcc3/html/wp-admin/includes/plugin.php on line 18

    Notice: Undefined offset: 1 in /home/katolickhwylfcc3/html/wp-admin/includes/plugin.php on line 21

    Notice: Undefined offset: 1 in /home/katolickhwylfcc3/html/wp-admin/includes/plugin.php on line 25

    Notice: Undefined offset: 1 in /home/katolickhwylfcc3/html/wp-admin/includes/plugin.php on line 26

    This causes that the headers was already snet and thus next problems. Where is the problem with plugin.php?

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  • To check if a plugin might be causing this, disable all plugins and see if the problem goes away. You may also wish to upgrade to 2.6.1 since it has improvements/bug fixes for 2.6.

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