Title: Valid header?
Last modified: August 22, 2016

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# Valid header?

 *  Resolved [creekdweller](https://wordpress.org/support/users/creekdweller/)
 * (@creekdweller)
 * [11 years, 4 months ago](https://wordpress.org/support/topic/valid-header-1/)
 * When we installed Duplicate and Merge Posts, a message came up saying the plugin
   did not have a valid header. Not sure if this is cause for concern, so we haven’t
   attempted to activate it.
 * [https://wordpress.org/plugins/duplicate-and-merge-posts/](https://wordpress.org/plugins/duplicate-and-merge-posts/)

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

 *  Thread Starter [creekdweller](https://wordpress.org/support/users/creekdweller/)
 * (@creekdweller)
 * [11 years, 4 months ago](https://wordpress.org/support/topic/valid-header-1/#post-5660161)
 * Maybe the part about not having a valid header has to do with the code not including
   a license designation, which appears to be required.
 * I activated the plugin but can’t use it because in place of the buttons that 
   are supposed to appear below the Publish box the following message appears:
 * Warning: in_array() expects parameter 2 to be array, string given in /home/fairmark/
   public_html/wp-content/plugins/duplicate-and-merge-posts/admin/duplicate-post.
   php on line 108
 * I went to settings, selected the box to exclude posts and the message went away(
   and stayed away when I went back to settings and deselected posts).
 *  Plugin Author [David Wells](https://wordpress.org/support/users/davidwells/)
 * (@davidwells)
 * [11 years, 4 months ago](https://wordpress.org/support/topic/valid-header-1/#post-5660163)
 * The valid header issue has been updated in 1.0.4
 * Will look into the other issue
 *  Plugin Author [David Wells](https://wordpress.org/support/users/davidwells/)
 * (@davidwells)
 * [11 years, 4 months ago](https://wordpress.org/support/topic/valid-header-1/#post-5660164)
 * The PHP warning is also fixed. Will release a plugin version update soon.
 * It shouldn’t halt any functionality for the time being though

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

The topic ‘Valid header?’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/duplicate-and-merge-posts_fbf4f2.
   svg)
 * [Duplicate and Merge Posts](https://wordpress.org/plugins/duplicate-and-merge-posts/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/duplicate-and-merge-posts/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/duplicate-and-merge-posts/)
 * [Active Topics](https://wordpress.org/support/plugin/duplicate-and-merge-posts/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/duplicate-and-merge-posts/unresolved/)
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 * 3 replies
 * 2 participants
 * Last reply from: [David Wells](https://wordpress.org/support/users/davidwells/)
 * Last activity: [11 years, 4 months ago](https://wordpress.org/support/topic/valid-header-1/#post-5660164)
 * Status: resolved