Title: WordPress 4.0 and plugin
Last modified: August 22, 2016

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# WordPress 4.0 and plugin

 *  Resolved [francescapenso](https://wordpress.org/support/users/francescapenso/)
 * (@francescapenso)
 * [11 years, 8 months ago](https://wordpress.org/support/topic/wordpress-40-and-plugin/)
 * Hi
    i’ve install the plugin with wordpress 4.0 Unfortunately: i’cant click (i
   click and nothing appears) the button PopUp Feature Image the button “preview
   po up” doesn’t work it doesn’t load the “Displyand option”
 * so the conditions remain always “always show PopUp”

Viewing 5 replies - 1 through 5 (of 5 total)

 *  [Predrag – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support1/)
 * (@wpmudev-support1)
 * [11 years, 8 months ago](https://wordpress.org/support/topic/wordpress-40-and-plugin/#post-5302962)
 * Hi [@francescapenso](https://wordpress.org/support/users/francescapenso/),
 * Sorry to hear of the problem you are having.
 * I have tested it on my test site using latest version of WordPress PopUp plugin&
   WordPress 4.0 and found it’s working fine.
 * Try deleting and reinstalling the WordPress PopUp plugin.
 * Can you check the javascript console for errors?
 * Find information about how to open JavaScript browser console :
 * [http://webmasters.stackexchange.com/questions/8525/how-to-open-the-javascript-console-in-different-browsers](http://webmasters.stackexchange.com/questions/8525/how-to-open-the-javascript-console-in-different-browsers)
   
   [http://codex.wordpress.org/Using_Your_Browser_to_Diagnose_JavaScript_Errors](http://codex.wordpress.org/Using_Your_Browser_to_Diagnose_JavaScript_Errors)
 * Let me know what errors if any you are getting.
 * You can just try on your development site using default WordPress theme like 
   Twenty Thirteen and deactivating all other plugins as displayed in the following
   flowchart to know which theme/plugin is conflicting if any.
 * [http://premium.wpmudev.org/wp-content/uploads/2013/12/Support-Process-Support-Process.png](http://premium.wpmudev.org/wp-content/uploads/2013/12/Support-Process-Support-Process.png)
 * Kind Regards,
    WPMU DEV
 *  Thread Starter [francescapenso](https://wordpress.org/support/users/francescapenso/)
 * (@francescapenso)
 * [11 years, 8 months ago](https://wordpress.org/support/topic/wordpress-40-and-plugin/#post-5302975)
 * Hi,
    i’ve tried with deleting and reinstalling word press popup plugin but it
   doestn’t work.
 * I use Javascript console and thies is the error i can show
 * Consider using ‘dppx’ units, as in CSS ‘dpi’ means dots-per-CSS-inch, not dots-
   per-physical-inch, so does not correspond to the actual ‘dpi’ of a screen. In
   media query expression: print, not all, (-webkit-min-device-pixel-ratio: 1.25),(
   min-resolution: 120dpi) post.php?post=1666&action=edit&lang=it:1
    Consider using‘
   dppx’ units, as in CSS ‘dpi’ means dots-per-CSS-inch, not dots-per-physical-inch,
   so does not correspond to the actual ‘dpi’ of a screen. In media query expression:
   print, not all, (-webkit-min-device-pixel-ratio: 1.25), (min-resolution: 120dpi)
   post.php?post=1666&action=edit&lang=it:844 Consider using ‘dppx’ units, as in
   CSS ‘dpi’ means dots-per-CSS-inch, not dots-per-physical-inch, so does not correspond
   to the actual ‘dpi’ of a screen. In media query expression: print, not all, (-
   webkit-min-device-pixel-ratio: 1.25), (min-resolution: 120dpi) post.php?post=
   1666&action=edit&lang=it:3205 Uncaught Error: Syntax error, unrecognized expression:[
   name=] load-scripts.php?c=1&load%5B%5D=jquery-core,jquery-migrate,utils,jquery-
   ui-core,jquery-ui-widget,jq…:2 Uncaught TypeError: Cannot read property ‘hasClass’
   of undefined load-scripts.php?c=1&load%5B%5D=hoverIntent,common,admin-bar,jquery-
   ui-sortable,thickbox,underscore…:575
 * I think it’s a problem with the theme beacause i’ve tried with another site, 
   same version of wp, different theme and it works…any suggestion?
    I’m using [http://themes.themegoods2.com/?theme=Mercury](http://themes.themegoods2.com/?theme=Mercury)
 *  Thread Starter [francescapenso](https://wordpress.org/support/users/francescapenso/)
 * (@francescapenso)
 * [11 years, 8 months ago](https://wordpress.org/support/topic/wordpress-40-and-plugin/#post-5302980)
 * is not the theme i’ve try it with the plugin in another site and it works….
 *  Thread Starter [francescapenso](https://wordpress.org/support/users/francescapenso/)
 * (@francescapenso)
 * [11 years, 8 months ago](https://wordpress.org/support/topic/wordpress-40-and-plugin/#post-5302983)
 * probabily i found the problem…some other plugin not at the last version
 *  [Predrag – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support1/)
 * (@wpmudev-support1)
 * [11 years, 8 months ago](https://wordpress.org/support/topic/wordpress-40-and-plugin/#post-5303061)
 * Hi [@francescapenso](https://wordpress.org/support/users/francescapenso/),
 * Awesome, great to see you found the problem.
 * Please advise if you have more questions.
 * Have a great day!
 * Cheers,
    WPMU DEV

Viewing 5 replies - 1 through 5 (of 5 total)

The topic ‘WordPress 4.0 and plugin’ is closed to new replies.

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 * 5 replies
 * 2 participants
 * Last reply from: [Predrag – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support1/)
 * Last activity: [11 years, 8 months ago](https://wordpress.org/support/topic/wordpress-40-and-plugin/#post-5303061)
 * Status: resolved