Comments on: How to fix the ‘The plugin does not have a valid header’ error when activating a WordPress plugin

By: neelam

neelam — Sat, 20 Sep 2014 09:22:57 +0000

“The plugin doesn’t have a valid error”
Please help me. Even i uploaded plugin via FTP and WordPress upload plugin. But same error exist.

By: Jody Murphy

Jody Murphy — Sat, 15 Jun 2013 03:42:15 +0000

This is helpful, but I’m really puzzled. Our blog plugins — ALL of them — are being auto deactivated. They seem to work for about an hour, then when I login, I receive a page summarizing multiple errors – one for each plugin stating “The plugin does not have a valid header.”

Have you encountered anything like this before? What suggestions do you have? Should we follow your recommendations above for each plugin? I’ve never had a problem like this on any WP blog I’ve set up and it’s got me a bit rattled. Thanks for your insights.

By: Sonia

Sonia — Tue, 02 Oct 2012 11:57:24 +0000

HI,
Thank you for the post. I’m having the «The plugin does not have a valid header.» problem. At first I could install plugins but now it doesn’t let me or upgrade the ones I have (It says they are upgraded but they aren’t). I checked the folder plugins and they had the files as you indicate. The wp_plugins folder has now the 777 permission but I still can’t do anything. And one more: I could only upgrade wp to 3.4.2 using the simple scripts.
Do you have any ideas? I’ve searched wp foruns and google it but no solution worked.

By: Robert

Robert — Sun, 20 May 2012 20:15:18 +0000

Richard,

Don’t know what to say about how well you explained this plugin error stuff ” the plugin does not have a valid header”.

I don’t think there are many folks out there with the organizational and teaching skills you have not to mention the generosity in putting this answer together. WOW!
Finally I was able to get the “mediaplayer-5.9-viral” activated thanks to your identification/validation php data example.

For a dummie-newbie like me, your explanation came like a God send,
thank you so much pal and my sincere gratitude.

By: Hugo

Hugo — Sun, 06 Nov 2011 15:24:46 +0000

Hi Richard,

I am sure all your site’s visitors would certainly benefit from your guidance and tutorials…judging from the compliments from them.
I am happy for you that your effort has reaped the rewards in terms of a great sense of satisfaction.

Rest assured that I have bookmarked your site and you bet I will be here whenever I can to continue learning from you and will make good use of what I have learned here.

Once again, thank you and my best regards to you and your loved ones.

By: Richard Feraro

Richard Feraro — Sun, 06 Nov 2011 13:19:17 +0000

In reply to Hugo.

Hello Hugo,

I am glad you found the article to be useful 🙂 I hope you visit once in a while in the site. Read through the comments too. Most of the visitors here find them useful in their job.

Regards 🙂

By: Hugo

Hugo — Sun, 06 Nov 2011 11:58:52 +0000

Mabuhay Richard –

Glad to have found your site while searching the net. As a non-techie guy and with very basic knowledge of PHP and MySQL (mainly simple installing of sites and databases), I hope to learn more from you here.

Used to live in Makati at the Twin towers when working with Ayala Corp. Now in Singapore and starting my full time online presence. A long way to go but taking it in my stride and planning outsourcing work mainly on graphics and sites as well as promo activities through various operatives in Fiverr and others.

This header fixing lesson is very helpful and appreciate very much.

All the best and take care.

By: Richard Feraro

Richard Feraro — Tue, 18 Oct 2011 14:31:45 +0000

In reply to Kulwant Nagi. Glad to know that :)

By: Kulwant Nagi

Kulwant Nagi — Tue, 18 Oct 2011 05:08:10 +0000

Wonderful post Brother. My Problem got fixed.

By: Richard Feraro

Richard Feraro — Sat, 17 Sep 2011 00:04:46 +0000

In reply to Tom. I'm glad it worked for you. ;-)

By: Richard Feraro

Richard Feraro — Sat, 17 Sep 2011 00:02:44 +0000

In reply to Jason. Reinstall or download again the plugin because it says something is missing