Title: Cannot activate plugin
Last modified: February 6, 2020

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# Cannot activate plugin

 *  Resolved [timf1](https://wordpress.org/support/users/timf1/)
 * (@timf1)
 * [6 years, 3 months ago](https://wordpress.org/support/topic/cannot-activate-plugin-61/)
 * Hi,
 * I have installed a new theme and have been unable to activate the plugin since.
   Have tried deleting and reinstalling, which doesn’t work.
 * I have been prompted with the following…
 * Fatal error: Cannot declare class Radium_Theme_Demo_Data_Importer, because the
   name is already in use in /home1/coveran3/public_html/wp-content/plugins/simple-
   link-directory/qc-op-directory-main.php on line 209
 * Any help/advice would be much appreciated.
 * Thanks,
    Tim

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

 *  Plugin Author [QuantumCloud](https://wordpress.org/support/users/quantumcloud/)
 * (@quantumcloud)
 * [6 years, 3 months ago](https://wordpress.org/support/topic/cannot-activate-plugin-61/#post-12409542)
 * Hi Tim,
 * We encountered similar error a couple of times before. Usually, this is a conflict
   with the theme’s demo data importer plugin. If you have a demo data importer 
   plugin, please deactivate that after importing the demo data. You won’t need 
   that anyways. Try activating the SLD plugin after that.
 * Let us know if it helped.
 * Thanks
 *  Thread Starter [timf1](https://wordpress.org/support/users/timf1/)
 * (@timf1)
 * [6 years, 3 months ago](https://wordpress.org/support/topic/cannot-activate-plugin-61/#post-12440469)
 * Thanks for the response. I can’t seem to figure out how to deactivate the demo
   data imported plugin.
 * Thanks,
    Tim
 *  Plugin Author [QuantumCloud](https://wordpress.org/support/users/quantumcloud/)
 * (@quantumcloud)
 * [6 years, 3 months ago](https://wordpress.org/support/topic/cannot-activate-plugin-61/#post-12444277)
 * Hi Tim,
 * Please share a screenshot of the plugins page. Also, you can try switching the
   theme and see if that fixes the issue. Then switch back.
 * Thanks
 *  Thread Starter [timf1](https://wordpress.org/support/users/timf1/)
 * (@timf1)
 * [6 years, 3 months ago](https://wordpress.org/support/topic/cannot-activate-plugin-61/#post-12448445)
 * Thank you so much! Just switching the theme and back made it work.
 * Thanks,
    Tim
    -  This reply was modified 6 years, 3 months ago by [timf1](https://wordpress.org/support/users/timf1/).
 *  Plugin Author [QuantumCloud](https://wordpress.org/support/users/quantumcloud/)
 * (@quantumcloud)
 * [6 years, 3 months ago](https://wordpress.org/support/topic/cannot-activate-plugin-61/#post-12449963)
 * Very glad to hear that 🙂
 * Please consider leaving the plugin a great rating. That is a great inspiration
   for our developer team.
 * Thank you!

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

The topic ‘Cannot activate plugin’ is closed to new replies.

 * ![](https://ps.w.org/simple-link-directory/assets/icon-256x256.png?rev=1826196)
 * [Simple Link Directory - AI Powered](https://wordpress.org/plugins/simple-link-directory/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/simple-link-directory/#faq)
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 * [Unresolved Topics](https://wordpress.org/support/plugin/simple-link-directory/unresolved/)
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 * 5 replies
 * 2 participants
 * Last reply from: [QuantumCloud](https://wordpress.org/support/users/quantumcloud/)
 * Last activity: [6 years, 3 months ago](https://wordpress.org/support/topic/cannot-activate-plugin-61/#post-12449963)
 * Status: resolved