Title: Thesis 1.5 Question
Last modified: August 19, 2016

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# Thesis 1.5 Question

 *  [Hello Friend](https://wordpress.org/support/users/danieldickey/)
 * (@danieldickey)
 * [17 years ago](https://wordpress.org/support/topic/thesis-15-question/)
 * Do you need wordpress 2.7 in order to use Thesis 1.5? I’m using 1.3.2 fine, but
   when I upload thesis 1.5 I get this message…
 * Fatal error: Call to undefined function: post_class() in /homepages/29/d253392398/
   htdocs/wordpress/wp-content/themes/thesisonefive/lib/functions/loop_functions.
   php on line 99
 * Any help would greatly be appreciated.
 * [http://www.DanielDickey.com](http://www.DanielDickey.com)

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

 *  [esmi](https://wordpress.org/support/users/esmi/)
 * (@esmi)
 * [17 years ago](https://wordpress.org/support/topic/thesis-15-question/#post-1064386)
 * It certainly looks like it. Check out the theme’s own web page/site for compatibilities.
 *  Thread Starter [Hello Friend](https://wordpress.org/support/users/danieldickey/)
 * (@danieldickey)
 * [17 years ago](https://wordpress.org/support/topic/thesis-15-question/#post-1064389)
 * Does anyone know what this line means? Even thesis 1.4 says the same thing for
   me.
 *  [esmi](https://wordpress.org/support/users/esmi/)
 * (@esmi)
 * [17 years ago](https://wordpress.org/support/topic/thesis-15-question/#post-1064432)
 * WordPress 2.7 introduced a new function that automatically applies 1 or more 
   classes to certain kinds of content – `post_class()`. Themes that use this function
   are only compatible with 2.7 or above.

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

The topic ‘Thesis 1.5 Question’ is closed to new replies.

## Tags

 * [thesis theme](https://wordpress.org/support/topic-tag/thesis-theme/)

 * In: [Installing WordPress](https://wordpress.org/support/forum/installation/)
 * 3 replies
 * 2 participants
 * Last reply from: [esmi](https://wordpress.org/support/users/esmi/)
 * Last activity: [17 years ago](https://wordpress.org/support/topic/thesis-15-question/#post-1064432)
 * Status: not resolved

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