Title: Problem Saving Changes to Plugin Options Last modified: October 22, 2017 --- # Problem Saving Changes to Plugin Options * Resolved [seeker2734](https://wordpress.org/support/users/seeker2734/) * (@seeker2734) * [8 years, 5 months ago](https://wordpress.org/support/topic/problem-saving-changes-to-plugin-options/) * I recognize that this may be a problem outside of TablePress, but a) it seems to be the only plugin exhibiting this behavior (so far) and b) it’s only happening on one of my WordPress installations that are both on the same server. * I’m trying to add some new Custom CSS in the Plugin Options. When I click the _Save Changes_ button, the page [http://xxx.xxx.xxx/wp-admin/admin-post.php](http://xxx.xxx.xxx/wp-admin/admin-post.php) loads but is blank, and the new CSS is not actually saved in the Custom CSS box. * Any ideas what would be causing this? * Thanks in advance! Viewing 8 replies - 1 through 8 (of 8 total) * Thread Starter [seeker2734](https://wordpress.org/support/users/seeker2734/) * (@seeker2734) * [8 years, 5 months ago](https://wordpress.org/support/topic/problem-saving-changes-to-plugin-options/#post-9610447) * Slight update: I turned on PHP debug on the site where this is an issue. This threw the following error when trying to save the changes on the Plugin Settings tab: * > Fatal error: Class ‘CSSTidy_custom_sanitize’ not found in /home/content/64/ > 5303764/html/member/wp-content/plugins/tablepress/classes/class-css.php on > line 79 * I can list the other plugins I use on the site if that’s needed to further troubleshoot this issue. * Thanks! * Plugin Author [Tobias Bäthge](https://wordpress.org/support/users/tobiasbg/) * (@tobiasbg) * [8 years, 5 months ago](https://wordpress.org/support/topic/problem-saving-changes-to-plugin-options/#post-9610737) * Hi, * thanks for your question, and sorry for the trouble. * This seems to be caused by the MailPoet plugin. Are you using that? For more discussion, please see [https://wordpress.org/support/topic/custom-css-fatal-error-2/](https://wordpress.org/support/topic/custom-css-fatal-error-2/) * I’m hopeful that I can integrate a workaround in the next version of TablePress. * Regards, Tobias * Thread Starter [seeker2734](https://wordpress.org/support/users/seeker2734/) * (@seeker2734) * [8 years, 5 months ago](https://wordpress.org/support/topic/problem-saving-changes-to-plugin-options/#post-9612501) * Tobias, * Yes, I do have the MailPoet plugin installed, both version 2 and their latest version 3, which was just recently released and will completely replace version 2. I will be removing version 2 since version 3 has proven to be stable. * I read the thread you linked to, and yes, temporarily deactivating the MailPoet plugin (all versions installed) then allows me to update the Plugin Options and save those changes. That will be my workaround until a more permanent fix can be determined. * Let me know if there’s anything I can do to help determine the more permanent solution. * Thank you! * Plugin Author [Tobias Bäthge](https://wordpress.org/support/users/tobiasbg/) * (@tobiasbg) * [8 years, 5 months ago](https://wordpress.org/support/topic/problem-saving-changes-to-plugin-options/#post-9612665) * Hi, * thanks for confirming! This confirms that MailPoet is the culprit here. Just to be sure: Does this problem also happen when you deactivate MailPoet 2 – but leave MailPoet 3 activated? * Regards, Tobias * Thread Starter [seeker2734](https://wordpress.org/support/users/seeker2734/) * (@seeker2734) * [8 years, 5 months ago](https://wordpress.org/support/topic/problem-saving-changes-to-plugin-options/#post-9613282) * Tobias, * Yes, it happens with either or both versions of the plugin activated. * Let me know what else I can provide. Thanks! * Plugin Author [Tobias Bäthge](https://wordpress.org/support/users/tobiasbg/) * (@tobiasbg) * [8 years, 5 months ago](https://wordpress.org/support/topic/problem-saving-changes-to-plugin-options/#post-9613396) * Hi, * ok, thanks! This means that their new version doesn’t fix this. Thus, I’ll make a change in TablePress to work around their bad code in the next release! * In the meantime, please deactivate MailPoet temporarily, whenever editing the TablePress “Custom CSS”. * Best wishes, Tobias * Thread Starter [seeker2734](https://wordpress.org/support/users/seeker2734/) * (@seeker2734) * [8 years, 5 months ago](https://wordpress.org/support/topic/problem-saving-changes-to-plugin-options/#post-9613476) * Will do. Thanks for your help! * Plugin Author [Tobias Bäthge](https://wordpress.org/support/users/tobiasbg/) * (@tobiasbg) * [8 years, 5 months ago](https://wordpress.org/support/topic/problem-saving-changes-to-plugin-options/#post-9614358) * Hi, * no problem, you are very welcome! 🙂 Good to hear that this helped! * Best wishes, Tobias * P.S.: In case you haven’t, please [rate TablePress](https://wordpress.org/support/plugin/tablepress/reviews/#new-post) here in the plugin directory. Thanks! Viewing 8 replies - 1 through 8 (of 8 total) The topic ‘Problem Saving Changes to Plugin Options’ is closed to new replies. * ![](https://ps.w.org/tablepress/assets/icon.svg?rev=3192944) * [TablePress - Tables in WordPress made easy](https://wordpress.org/plugins/tablepress/) * [Frequently Asked Questions](https://wordpress.org/plugins/tablepress/#faq) * [Support Threads](https://wordpress.org/support/plugin/tablepress/) * [Active Topics](https://wordpress.org/support/plugin/tablepress/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/tablepress/unresolved/) * [Reviews](https://wordpress.org/support/plugin/tablepress/reviews/) * 8 replies * 2 participants * Last reply from: [Tobias Bäthge](https://wordpress.org/support/users/tobiasbg/) * Last activity: [8 years, 5 months ago](https://wordpress.org/support/topic/problem-saving-changes-to-plugin-options/#post-9614358) * Status: resolved