Title: rex75's Replies | WordPress.org

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# rex75

  [  ](https://wordpress.org/support/users/rex75/)

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 *   [Topics Started](https://wordpress.org/support/users/rex75/topics/)
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 *   [Topics Replied To](https://wordpress.org/support/users/rex75/replied-to/)
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## Forum Replies Created

Viewing 3 replies - 1 through 3 (of 3 total)

 *   Forum: [Plugins](https://wordpress.org/support/forum/plugins-and-hacks/)
    In
   reply to: [[Regenerate Thumbnails] Unable to fetch a list of attachment IDs to process from the WordPress REST API.](https://wordpress.org/support/topic/unable-to-fetch-a-list-of-attachment-ids-to-process-from-the-wordpress-rest-api/)
 *  Thread Starter [rex75](https://wordpress.org/support/users/rex75/)
 * (@rex75)
 * [8 years, 4 months ago](https://wordpress.org/support/topic/unable-to-fetch-a-list-of-attachment-ids-to-process-from-the-wordpress-rest-api/#post-9855112)
 * I did the changes in my self written plugin and theme of course.
 *   Forum: [Plugins](https://wordpress.org/support/forum/plugins-and-hacks/)
    In
   reply to: [[Regenerate Thumbnails] Unable to fetch a list of attachment IDs to process from the WordPress REST API.](https://wordpress.org/support/topic/unable-to-fetch-a-list-of-attachment-ids-to-process-from-the-wordpress-rest-api/)
 *  Thread Starter [rex75](https://wordpress.org/support/users/rex75/)
 * (@rex75)
 * [8 years, 4 months ago](https://wordpress.org/support/topic/unable-to-fetch-a-list-of-attachment-ids-to-process-from-the-wordpress-rest-api/#post-9855110)
 * Sorry for the late reply.
 * I updated to 3.0.1, same error.
 * I tried your link mentioned aboved and got a error from my self written theme
   and plugin.
 * Changed
 * `if(is_plugin_active("blabla"))`
 * to
 * `if(function_exists("is_plugin_active") && is_plugin_active("blabla"))`
 * Now your plugin works. It was not your fault, it was mine. 🙁
 * Your link again presents a correct result.
 *   Forum: [Plugins](https://wordpress.org/support/forum/plugins-and-hacks/)
    In
   reply to: [[Regenerate Thumbnails] Unable to fetch a list of attachment IDs to process from the WordPress REST API.](https://wordpress.org/support/topic/unable-to-fetch-a-list-of-attachment-ids-to-process-from-the-wordpress-rest-api/)
 *  Thread Starter [rex75](https://wordpress.org/support/users/rex75/)
 * (@rex75)
 * [8 years, 4 months ago](https://wordpress.org/support/topic/unable-to-fetch-a-list-of-attachment-ids-to-process-from-the-wordpress-rest-api/#post-9799356)
 * Version 3.0.0

Viewing 3 replies - 1 through 3 (of 3 total)