Title: upgrade and installation problems
Last modified: August 19, 2016

---

# upgrade and installation problems

 *  Resolved [bobtongue](https://wordpress.org/support/users/bobtongue/)
 * (@bobtongue)
 * [17 years, 6 months ago](https://wordpress.org/support/topic/upgrade-and-installation-problems/)
 * I am at a loss. I have been running wordpress flawlessly for about three years
   now with no problem. Lately when I upgraded my installation I notived that my
   plugins were not activated. When I tried to activate them, i was told that they
   were activated but they were still listed as unactivated. After much searching
   and not finding a solution I tried a couple of other things. I installed a widget
   too see if that was working and after installation, the board no longer functioned.
   I had to edit a few lines out of the widgets.php file. They were:
    if ( empty(
   $wp_registered_sidebars[$index]) || !array_key_exists($index, $sidebars_widgets)
 * and:
 * unset($sidebars_widgets[‘array_version’]);
 * I am not php savvy, but this at least allowed me to get the board back to a “
   readable” state.
 * My next thought was to try a “clean” install in a different virtual domain.
    
   I created a new database (empty) and installed wordpress fresh into my personal
   domain. After install I ran wp-admin/install.php and it seemed to go fine. It
   presented me with my password and when I went to log in I got this error:
 * Warning: Invalid argument supplied for foreach() in /var/www/bobtongue.com/htdocs/
   wordpress/wp-includes/capabilities.php on line 31
 * Warning: Cannot modify header information – headers already sent by (output started
   at /var/www/bobtongue.com/htdocs/wordpress/wp-includes/capabilities.php:31) in/
   var/www/bobtongue.com/htdocs/wordpress/wp-includes/pluggable.php on line 595
 * Warning: Cannot modify header information – headers already sent by (output started
   at /var/www/bobtongue.com/htdocs/wordpress/wp-includes/capabilities.php:31) in/
   var/www/bobtongue.com/htdocs/wordpress/wp-includes/pluggable.php on line 596
 * Warning: Cannot modify header information – headers already sent by (output started
   at /var/www/bobtongue.com/htdocs/wordpress/wp-includes/capabilities.php:31) in/
   var/www/bobtongue.com/htdocs/wordpress/wp-includes/pluggable.php on line 597
 * Warning: Cannot modify header information – headers already sent by (output started
   at /var/www/bobtongue.com/htdocs/wordpress/wp-includes/capabilities.php:31) in/
   var/www/bobtongue.com/htdocs/wordpress/wp-includes/pluggable.php on line 770
 * I have searched in vain for a solution. I could not find any broken lines in 
   my user_roles database entry and magic quotes in all flavors is turned off via
   the php.ini file. I have verified this. I am at a loss. Any help would be appreciated.
   I am running wordpress 2.6.2 on gentoo linux 2.6 kernel php version 5.2.6-r7 
   and apache 2.2.9-r1.

Viewing 1 replies (of 1 total)

 *  Thread Starter [bobtongue](https://wordpress.org/support/users/bobtongue/)
 * (@bobtongue)
 * [17 years, 6 months ago](https://wordpress.org/support/topic/upgrade-and-installation-problems/#post-888598)
 * I found the error after exhaustive search for answers. Too many articles explaining
   that magic quotes needs to be turned off. This is only true for magic_quotes_runtime.
   I had all magic quotes turned off. Finally found and article that explained this.
   I had to change to
    magic_quotes_gpc = On magic_quotes_runtime = Off magic_quotes_sybase
   = On It is important to note that these settings need to be in place before wordpress
   creates the database structure. If they are set wrong when the database is created
   it will be corrupt. Unfortunately I figured this out after the existing database
   was upgraded. Another lesson learned, back up the database before upgrades. I
   was able to find most corrupted entries and delete them (wordpress recreates 
   them) and so got out of it. There should be a warning in the installation instructions
   that these settings need to be set BEFORE installation. It would save a lot of
   heartache in the future.

Viewing 1 replies (of 1 total)

The topic ‘upgrade and installation problems’ is closed to new replies.

## Tags

 * [login](https://wordpress.org/support/topic-tag/login/)
 * [upgrade](https://wordpress.org/support/topic-tag/upgrade/)
 * [widgets.php](https://wordpress.org/support/topic-tag/widgets-php/)

 * In: [Installing WordPress](https://wordpress.org/support/forum/installation/)
 * 1 reply
 * 1 participant
 * Last reply from: [bobtongue](https://wordpress.org/support/users/bobtongue/)
 * Last activity: [17 years, 6 months ago](https://wordpress.org/support/topic/upgrade-and-installation-problems/#post-888598)
 * Status: resolved

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