Title: upgrade help
Last modified: August 18, 2016

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# upgrade help

 *  Resolved [gmpicket](https://wordpress.org/support/users/gmpicket/)
 * (@gmpicket)
 * [18 years, 10 months ago](https://wordpress.org/support/topic/upgrade-help-1/)
 * I installed the upgrade to 2.2.1 (was using 2.0.4) – and when I try to run the
   upgrade.php i get:
 * Fatal error: Call to undefined function: add_filter() in /home/gmpicket/public_html/
   wp-includes/default-filters.php on line 4
 * How do I fix this?
    Thanks.

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Thread Starter [gmpicket](https://wordpress.org/support/users/gmpicket/)
 * (@gmpicket)
 * [18 years, 10 months ago](https://wordpress.org/support/topic/upgrade-help-1/#post-592890)
 * Nevermind. I got it fixed. Stupid mistake….
 *  [boyarick](https://wordpress.org/support/users/boyarick/)
 * (@boyarick)
 * [18 years, 1 month ago](https://wordpress.org/support/topic/upgrade-help-1/#post-593322)
 * how did you get it fixed? i got the same error message when porting a blog from
   one host to another.

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘upgrade help’ is closed to new replies.

## Tags

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

 * In: [Installing WordPress](https://wordpress.org/support/forum/installation/)
 * 2 replies
 * 2 participants
 * Last reply from: [boyarick](https://wordpress.org/support/users/boyarick/)
 * Last activity: [18 years, 1 month ago](https://wordpress.org/support/topic/upgrade-help-1/#post-593322)
 * Status: resolved

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