Title: error message on activation
Last modified: August 31, 2016

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# error message on activation

 *  [dimpat](https://wordpress.org/support/users/dimpat/)
 * (@dimpat)
 * [10 years, 2 months ago](https://wordpress.org/support/topic/error-message-on-activation-10/)
 * I just installed the plugin after searching for 2 days for a solution.
    I just
   wanted to create a sortable post/slug column in admin panel and it seems that
   this plugin is exactly what I need . But after activation I get this error message:
   Warning: Illegal string offset in Line 12 and 14 of wpi_custom_filter.php
 * Any ideas? I use a twenty ten child theme.
    Thanks
 * [https://wordpress.org/plugins/wpi-custom-admin-columns-for-sorting-and-filtering/](https://wordpress.org/plugins/wpi-custom-admin-columns-for-sorting-and-filtering/)

Viewing 1 replies (of 1 total)

 *  Plugin Author [WPI](https://wordpress.org/support/users/rohanmehta19/)
 * (@rohanmehta19)
 * [10 years, 2 months ago](https://wordpress.org/support/topic/error-message-on-activation-10/#post-7137995)
 * Sorry to say that plugin will not be able to create sortable post/slug column.
   It only works on post custom fields

Viewing 1 replies (of 1 total)

The topic ‘error message on activation’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/wpi-custom-admin-columns-for-sorting-
   and-filtering.svg)
 * [Custom Admin columns for Sorting and Filtering](https://wordpress.org/plugins/wpi-custom-admin-columns-for-sorting-and-filtering/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wpi-custom-admin-columns-for-sorting-and-filtering/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wpi-custom-admin-columns-for-sorting-and-filtering/)
 * [Active Topics](https://wordpress.org/support/plugin/wpi-custom-admin-columns-for-sorting-and-filtering/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wpi-custom-admin-columns-for-sorting-and-filtering/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/wpi-custom-admin-columns-for-sorting-and-filtering/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [WPI](https://wordpress.org/support/users/rohanmehta19/)
 * Last activity: [10 years, 2 months ago](https://wordpress.org/support/topic/error-message-on-activation-10/#post-7137995)
 * Status: not resolved