Title: Error When installing
Last modified: June 13, 2025

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# Error When installing

 *  [iamjoefriday](https://wordpress.org/support/users/iamjoefriday/)
 * (@iamjoefriday)
 * [1 year ago](https://wordpress.org/support/topic/error-when-installing-39/)
 * I Get the error: “The plugin does not have a valid header.” when activating the
   plugin.

Viewing 1 replies (of 1 total)

 *  Plugin Author [Sergio Comella](https://wordpress.org/support/users/panezio923/)
 * (@panezio923)
 * [1 year ago](https://wordpress.org/support/topic/error-when-installing-39/#post-18510801)
 * Hi,
 * please, try it again with the 1.4.0 version. Thank you for your segnalation!

Viewing 1 replies (of 1 total)

The topic ‘Error When installing’ is closed to new replies.

 * ![](https://ps.w.org/pdf-gallery-viewer/assets/icon-128x128.png?rev=3285216)
 * [PDF Gallery Viewer](https://wordpress.org/plugins/pdf-gallery-viewer/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/pdf-gallery-viewer/#faq)
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 * 1 reply
 * 2 participants
 * Last reply from: [Sergio Comella](https://wordpress.org/support/users/panezio923/)
 * Last activity: [1 year ago](https://wordpress.org/support/topic/error-when-installing-39/#post-18510801)
 * Status: not resolved