Title: [Plugin: NextGEN Gallery] Fatal error in /wp-includes/classes.php
Last modified: August 19, 2016

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# [Plugin: NextGEN Gallery] Fatal error in /wp-includes/classes.php

 *  Resolved [danjng](https://wordpress.org/support/users/danjng/)
 * (@danjng)
 * [16 years, 4 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-fatal-error-in-wp-includesclassesphp/)
 * I just upgraded to the latest version of the NextGEN Gallery plugin, and it broke
   my website altogether.
 * The error that comes up is the following:
 * Catchable fatal error: Object of class wordpress_gallery_slideshow could not 
   be converted to string in …/wp-includes/classes.php on line 273
 * At first I thought it would be an issue in WP, but strangely enough, disabling
   the plugin brought everything back to normal.
 * Is anyone else having this issue?

Viewing 8 replies - 1 through 8 (of 8 total)

 *  Thread Starter [danjng](https://wordpress.org/support/users/danjng/)
 * (@danjng)
 * [16 years, 4 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-fatal-error-in-wp-includesclassesphp/#post-1279231)
 * Reverted to 1.4.1 until further notice. 1.4.3 and 1.4.2 both do not work for 
   some reason. The same error is presented as above:
 * Catchable fatal error: Object of class wordpress_gallery_slideshow could not 
   be converted to string in /…/wp-includes/classes.php on line 273
 * I am eagerly awaiting a reply. Thanks!
 *  [Alex Rabe](https://wordpress.org/support/users/alexrabe/)
 * (@alexrabe)
 * [16 years, 4 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-fatal-error-in-wp-includesclassesphp/#post-1279239)
 * Please give me the list of all plugins which you have installed
 *  Thread Starter [danjng](https://wordpress.org/support/users/danjng/)
 * (@danjng)
 * [16 years, 4 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-fatal-error-in-wp-includesclassesphp/#post-1279248)
 * Thanks for the reply, Alex! You’re good…
 * I guess it was pretty noobish of me to neglect looking into conflicting plugins.
 * It turns out that, the main culprit was WordPress Gallery Slideshow. Disabling
   that plugin made everything work just fine again.
 * I guess your update broke that plugin’s capability. Not your problem anymore,
   right? 😛
 * Thanks again for your help! My brain farts kill me. Keep up the fantastic work!
 *  [woodymood](https://wordpress.org/support/users/woodymood/)
 * (@woodymood)
 * [16 years, 4 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-fatal-error-in-wp-includesclassesphp/#post-1279421)
 * I have the same problem since last version of nextgen.
 * At the first glance, I agree that nextgen plugin can work alone, wordpress galerie
   slideshow can work alone, but both plugins can not work together.
 * I’m looking for a solution…
 *  [woodymood](https://wordpress.org/support/users/woodymood/)
 * (@woodymood)
 * [16 years, 4 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-fatal-error-in-wp-includesclassesphp/#post-1279422)
 * hi,
 * some news:
 * nextgen plugin adds a public_query_vars named ‘slideshow’ and wordpress galery
   slideshow plugin uses a global object called ‘$slideshow’.
 * so when wordpress parse the public_query_vars, it finds an unexpected object
 * how to fix it ?
 *  [woodymood](https://wordpress.org/support/users/woodymood/)
 * (@woodymood)
 * [16 years, 4 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-fatal-error-in-wp-includesclassesphp/#post-1279423)
 * I think the best is to rename the object in the wordpress gallery slideshow plugin,
   because nextgen seems to need this var.
 * I tried to rename the object $slideshow and now both plugins are working together:
   O)
 * (6 occurences in slideshow.php, from the wordpress gallery slideshow plugin)
 *  [woodymood](https://wordpress.org/support/users/woodymood/)
 * (@woodymood)
 * [16 years, 3 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-fatal-error-in-wp-includesclassesphp/#post-1279436)
 * If you want to [download my patch](http://www.woodymood-dev.net/cms/wordpress/fr/2009/11/29/patch-plugin-wordpress-gallery-slideshow-nextgen/),
   It seems like the author didn’t have changed its plugin yet
 *  [isaak-wells](https://wordpress.org/support/users/isaak-wells/)
 * (@isaak-wells)
 * [16 years, 1 month ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-fatal-error-in-wp-includesclassesphp/#post-1279461)
 * woodymood, you saved my life. thanks for the patch.

Viewing 8 replies - 1 through 8 (of 8 total)

The topic ‘[Plugin: NextGEN Gallery] Fatal error in /wp-includes/classes.php’ is
closed to new replies.

 * 8 replies
 * 4 participants
 * Last reply from: [isaak-wells](https://wordpress.org/support/users/isaak-wells/)
 * Last activity: [16 years, 1 month ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-fatal-error-in-wp-includesclassesphp/#post-1279461)
 * Status: resolved

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