Title: Fatal error
Last modified: August 20, 2016

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# Fatal error

 *  Resolved [biztips](https://wordpress.org/support/users/biztips/)
 * (@biztips)
 * [13 years, 6 months ago](https://wordpress.org/support/topic/fatal-error-558/)
 * Installed the testimonials widget yesterday, worked fine. LOVE IT! (see paintingcolumbiamo.
   com)
 * Installed again today – different domain but same theme. Am getting a fatal error
   message, it’s near the bottom of columbiamoroofrepair.com –
    Fatal error: Call
   to undefined function has_post_thumbnail() in /home/postcard/public_html/columbiamoroofrepair.
   com/wp-content/plugins/testimonials-widget/testimonials-widget.php on line 862
 * By the way, there are supposed to be 3 text boxes at the bottom of that page.
 * Bought the Premium version of the plugin and activated it – no change, not sure
   what to try. Thanks!
 * [http://wordpress.org/extend/plugins/testimonials-widget/](http://wordpress.org/extend/plugins/testimonials-widget/)

Viewing 6 replies - 1 through 6 (of 6 total)

 *  Plugin Contributor [Michael Cannon](https://wordpress.org/support/users/comprock/)
 * (@comprock)
 * [13 years, 6 months ago](https://wordpress.org/support/topic/fatal-error-558/#post-3230498)
 * Are you running an older version of WordPress? [has_post_thumbnail](http://codex.wordpress.org/Function_Reference/has_post_thumbnail)
   has been in WordPress since 2.9.0.
 * Could you please try using a default WordPress theme and let me know if you can
   use Testimonials Widget with that them?
 * The donated for premium add-on only offers read more links and caching at this
   point. It wouldn’t affect the “undefined function has_post_thumbnail” error message.
 * PS: Thank you for [your kind words](http://typo3vagabond.com/testimonial/diana-ratliff/).
 *  Thread Starter [biztips](https://wordpress.org/support/users/biztips/)
 * (@biztips)
 * [13 years, 6 months ago](https://wordpress.org/support/topic/fatal-error-558/#post-3230512)
 * Version 3.3.1 – so not TOO old, I don’t think.
 * If I switch to the default theme do I lose all the settings/content?
 * I did notice that the other site – the one on which it’s working fine – is a 
   newer version of WP, version 3.4.2. So if I upgrade the one on which it’s not
   working to a newer version of WP do you think that might help?
 * If I try that, should I uninstall or deactivate your plugins, first?
 *  Plugin Contributor [Michael Cannon](https://wordpress.org/support/users/comprock/)
 * (@comprock)
 * [13 years, 6 months ago](https://wordpress.org/support/topic/fatal-error-558/#post-3230513)
 * Go for deactivating the TW plugin before upgrading WordPress.
 * You can change themes without losing your widget settings and such. However, 
   you’ll probably need to create a new Testimonials Widget to test with since I
   don’t think that 2011/2012 has footer widgets.
 * Once done testing, you can use the original theme again.
 *  Thread Starter [biztips](https://wordpress.org/support/users/biztips/)
 * (@biztips)
 * [13 years, 6 months ago](https://wordpress.org/support/topic/fatal-error-558/#post-3230527)
 * I upgraded WP and now it works – didn’t have to mess with the theme. THANK YOU!
 *  Thread Starter [biztips](https://wordpress.org/support/users/biztips/)
 * (@biztips)
 * [13 years, 6 months ago](https://wordpress.org/support/topic/fatal-error-558/#post-3230529)
 * One more question – can I change how quickly the testimonials change? Slow it
   down?
 *  Plugin Contributor [Michael Cannon](https://wordpress.org/support/users/comprock/)
 * (@comprock)
 * [13 years, 6 months ago](https://wordpress.org/support/topic/fatal-error-558/#post-3230532)
 * Look for the “Rotation Speed” on the widget options panel or use the `refresh_interval`
   option in shortcode to adjust the number of seconds between testimonial rotations.
 * I’m adding FAQ 44 for you with this.

Viewing 6 replies - 1 through 6 (of 6 total)

The topic ‘Fatal error’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/testimonials-widget_c56561.svg)
 * [Testimonials Widget](https://wordpress.org/plugins/testimonials-widget/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/testimonials-widget/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/testimonials-widget/)
 * [Active Topics](https://wordpress.org/support/plugin/testimonials-widget/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/testimonials-widget/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/testimonials-widget/reviews/)

## Tags

 * [fatal error](https://wordpress.org/support/topic-tag/fatal-error/)

 * 6 replies
 * 2 participants
 * Last reply from: [Michael Cannon](https://wordpress.org/support/users/comprock/)
 * Last activity: [13 years, 6 months ago](https://wordpress.org/support/topic/fatal-error-558/#post-3230532)
 * Status: resolved