Title: Upgrade Problems!!
Last modified: August 18, 2016

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# Upgrade Problems!!

 *  [cherub143](https://wordpress.org/support/users/cherub143/)
 * (@cherub143)
 * [22 years ago](https://wordpress.org/support/topic/upgrade-problems/)
 * I’m upgrading from WP1.0.2 to WP1.2
    But on step 1 I get this: Fatal error: Call
   to undefined function: sanitize_title() in /home/…/public_html/…/wp-admin/upgrade-
   functions.php on line 697 =( Help? I backed up all my files first changed the
   details in wp-config.php then FTPed all the files in mingus therefore overwriting
   all previous files

Viewing 3 replies - 1 through 3 (of 3 total)

 *  [Geronimo](https://wordpress.org/support/users/geronimo/)
 * (@geronimo)
 * [22 years ago](https://wordpress.org/support/topic/upgrade-problems/#post-57210)
 * I got that too when doing an upgrade from 1.02 to 1.2.
 *  [pezastic](https://wordpress.org/support/users/pezastic/)
 * (@pezastic)
 * [22 years ago](https://wordpress.org/support/topic/upgrade-problems/#post-57248)
 * Before I do an upgrade, what is the proper procedure?
 *  [Mark (podz)](https://wordpress.org/support/users/podz/)
 * (@podz)
 * [22 years ago](https://wordpress.org/support/topic/upgrade-problems/#post-57250)
 * [http://wordpress.org/support/3/5998](http://wordpress.org/support/3/5998)

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Upgrade Problems!!’ is closed to new replies.

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 3 replies
 * 4 participants
 * Last reply from: [Mark (podz)](https://wordpress.org/support/users/podz/)
 * Last activity: [22 years ago](https://wordpress.org/support/topic/upgrade-problems/#post-57250)
 * Status: not resolved

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