Title: Upgrade problem
Last modified: August 18, 2016

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# Upgrade problem

 *  Resolved [pbowman](https://wordpress.org/support/users/pbowman/)
 * (@pbowman)
 * [18 years, 8 months ago](https://wordpress.org/support/topic/upgrade-problem-6/)
 * I just upgraded to version 2.3 and I get this warning at the top of every post:
 * Warning: array_key_exists(): The first argument should be either a string or 
   an integer in /var/www/vhosts/faith-journey.com/httpdocs/wp-includes/category-
   template.php on line 176
 * This only shows up on the main page, not on single post pages
 * Help…

Viewing 1 replies (of 1 total)

 *  Thread Starter [pbowman](https://wordpress.org/support/users/pbowman/)
 * (@pbowman)
 * [18 years, 8 months ago](https://wordpress.org/support/topic/upgrade-problem-6/#post-630122)
 * Also, I just found that comments doesn’t quite work right either. The comment
   goes through, but it first goes to a weird error page.

Viewing 1 replies (of 1 total)

The topic ‘Upgrade problem’ is closed to new replies.

## Tags

 * [category template](https://wordpress.org/support/topic-tag/category-template/)
 * [upgrade](https://wordpress.org/support/topic-tag/upgrade/)

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 1 reply
 * 1 participant
 * Last reply from: [pbowman](https://wordpress.org/support/users/pbowman/)
 * Last activity: [18 years, 8 months ago](https://wordpress.org/support/topic/upgrade-problem-6/#post-630122)
 * Status: resolved

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