Title: Error: "undefined method CustomSidebars::instance()" when active the plugin
Last modified: August 21, 2016

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# Error: "undefined method CustomSidebars::instance()" when active the plugin

 *  Resolved [losimo](https://wordpress.org/support/users/losimo/)
 * (@losimo)
 * [11 years, 8 months ago](https://wordpress.org/support/topic/error-undefined-method-customsidebarsinstance-when-active-the-plugin/)
 * Hi!
 * I updated the last version and to activate the plugin I get this error. I tried
   to install an earlier version but the error goes well.
 * The web server that runs windows server and PLESK.
 * > PHP Fatal error: Call to undefined method CustomSidebars::instance() in ..\
   > wp-content\plugins\custom-sidebars\customsidebars.php on line 62
 * Thanks!!
 * [https://wordpress.org/plugins/custom-sidebars/](https://wordpress.org/plugins/custom-sidebars/)

Viewing 5 replies - 1 through 5 (of 5 total)

 *  [David](https://wordpress.org/support/users/ugotsta/)
 * (@ugotsta)
 * [11 years, 8 months ago](https://wordpress.org/support/topic/error-undefined-method-customsidebarsinstance-when-active-the-plugin/#post-5118246)
 * Hi [@losimo](https://wordpress.org/support/users/losimo/),
 * Thanks for posting here! Sorry you’ve had some trouble with that though, I can’t
   seem to replicate but I’m sure we can get that sorted.
 * Could I ask if you’ve got another version of Custom Sidebars loaded somehow, 
   maybe an older version?
 * Could you please try ensuring you’ve actually deleted any previous or other version
   of the plugin?
 * Also, could you let us know what version of WordPress and PHP you’re on?
 * That could help us narrow the issue down, as this isn’t something I can replicate.
 * It might also be easier to simply deactivate all other plugins, switch to Twenty
   Fourteen and try it with that. That’ll help to know if there’s a plugin/theme
   conflict there.
 * Looking forward to getting this sorted with ya! 🙂
 * Cheers,
    David
 *  Thread Starter [losimo](https://wordpress.org/support/users/losimo/)
 * (@losimo)
 * [11 years, 8 months ago](https://wordpress.org/support/topic/error-undefined-method-customsidebarsinstance-when-active-the-plugin/#post-5118379)
 * Thanks David!
 * Check it and tell you something.
 * Good morning!
 *  [David](https://wordpress.org/support/users/ugotsta/)
 * (@ugotsta)
 * [11 years, 8 months ago](https://wordpress.org/support/topic/error-undefined-method-customsidebarsinstance-when-active-the-plugin/#post-5118381)
 * Hi [@losimo](https://wordpress.org/support/users/losimo/), thanks for your reply!
   Have you tried that out as yet?
 * I’d love to see how that works for you, possibly just a simple plugin/theme conflict?
 * Just let us know what ya find, I’m sure we can sort it. 🙂
 * Thanks!
    David
 *  Thread Starter [losimo](https://wordpress.org/support/users/losimo/)
 * (@losimo)
 * [11 years, 8 months ago](https://wordpress.org/support/topic/error-undefined-method-customsidebarsinstance-when-active-the-plugin/#post-5118389)
 * Thanks for your time!
 * the problem was with the theme. Now we are all working properly!
 * Good summer!
 *  [Predrag – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support1/)
 * (@wpmudev-support1)
 * [11 years, 8 months ago](https://wordpress.org/support/topic/error-undefined-method-customsidebarsinstance-when-active-the-plugin/#post-5118390)
 * Awesome, great to see you got that worked.
 * If we can be of any further assistance please don’t hesitate to ask 🙂
 * Have a great day!
 * Cheers,
    WPMU DEV

Viewing 5 replies - 1 through 5 (of 5 total)

The topic ‘Error: "undefined method CustomSidebars::instance()" when active the 
plugin’ is closed to new replies.

 * ![](https://ps.w.org/custom-sidebars/assets/icon-256x256.png?rev=1414065)
 * [Custom Sidebars - Dynamic Sidebar Classic Widget Area Manager](https://wordpress.org/plugins/custom-sidebars/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/custom-sidebars/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/custom-sidebars/)
 * [Active Topics](https://wordpress.org/support/plugin/custom-sidebars/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/custom-sidebars/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/custom-sidebars/reviews/)

 * 5 replies
 * 3 participants
 * Last reply from: [Predrag – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support1/)
 * Last activity: [11 years, 8 months ago](https://wordpress.org/support/topic/error-undefined-method-customsidebarsinstance-when-active-the-plugin/#post-5118390)
 * Status: resolved