Title: The plugin does not have valid header
Last modified: August 30, 2016

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# The plugin does not have valid header

 *  [paer](https://wordpress.org/support/users/paer/)
 * (@paer)
 * [10 years, 8 months ago](https://wordpress.org/support/topic/the-plugin-does-not-have-valid-header/)
 * Hi,
 * When activating this plugin I get a blank page with the message “The plugin does
   not have valid header”.
 * I am using WP 4.3 and PHP 5.5 on my local machine.
 * Does anyone have this problem, too?
 * [https://wordpress.org/plugins/better-shortcodes/](https://wordpress.org/plugins/better-shortcodes/)

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

 *  Thread Starter [paer](https://wordpress.org/support/users/paer/)
 * (@paer)
 * [10 years, 8 months ago](https://wordpress.org/support/topic/the-plugin-does-not-have-valid-header/#post-6503479)
 * Here some additional information.
 * When activating the plugin I get this message too:
    “The plugin generated 376
   characters of unexpected output during activation. If you notice “headers already
   sent” messages, problems with syndication feeds or other issues, try deactivating
   or removing this plugin.”
 * BTW, I deactivated all plugins but no change.
 * Thanks
 *  Plugin Author [designedbw](https://wordpress.org/support/users/designedbw/)
 * (@designedbw)
 * [10 years, 8 months ago](https://wordpress.org/support/topic/the-plugin-does-not-have-valid-header/#post-6503491)
 * Please try downloading the plugin and then directly uploading it (if you attempted
   to install directly from the WP Admin).
 * Let us know if that resolves your issue.
 * Thanks!
 *  Thread Starter [paer](https://wordpress.org/support/users/paer/)
 * (@paer)
 * [10 years, 8 months ago](https://wordpress.org/support/topic/the-plugin-does-not-have-valid-header/#post-6503606)
 * Hi, I uploaded the zip manually on my local set up, but without success.
 * Just to verify this error, I set up a new WP install on a hosted server. Uploaded
   the zip and activated the plugin.
    I didn’t get the error like I mentioned on
   my first post, but when changing debug to true I still get this message:
 * _The plugin generated 374 characters of unexpected output during activation. 
   If you notice “headers already sent” messages, problems with syndication feeds
   or other issues, try deactivating or removing this plugin._
 * I hope those informations help u to track down the issue…

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

The topic ‘The plugin does not have valid header’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/better-shortcodes.svg)
 * [Better Shortcodes for TinyMCE](https://wordpress.org/plugins/better-shortcodes/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/better-shortcodes/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/better-shortcodes/)
 * [Active Topics](https://wordpress.org/support/plugin/better-shortcodes/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/better-shortcodes/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/better-shortcodes/reviews/)

 * 3 replies
 * 2 participants
 * Last reply from: [paer](https://wordpress.org/support/users/paer/)
 * Last activity: [10 years, 8 months ago](https://wordpress.org/support/topic/the-plugin-does-not-have-valid-header/#post-6503606)
 * Status: not resolved