Title: adding new plug-in breaks plugins.php
Last modified: August 21, 2016

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# adding new plug-in breaks plugins.php

 *  Resolved [Michael_onSaba](https://wordpress.org/support/users/michael_onsaba/)
 * (@michael_onsaba)
 * [12 years, 2 months ago](https://wordpress.org/support/topic/adding-new-plug-in-breaks-pluginsphp/)
 * I am stumped. I’ve been working on a new wordpress installation. Had a few pitfalls
   here and there, but have been get everything I want to do to work so far. Today,
   I installed a new theme, Weaver II Pro, and activated it. Everything seemed fine.
   I then installed a new plugin, UberMenu, but did not activate it immediately.
   When I tried to install another plugin, image-horizontal-reel-scroll-slideshow,
   the install stalled, or failed during or after upload. I just got a blank screen,
   no title, nothing. When I tried to view installed plugins, same thing, blank 
   screen. The page stops loading, but everyting is blank. Viewing source is also
   blank, shows 1 empty line.
 * Trying to troubleshoot I searched for solutions to this, found some simalar, 
   but not exactly the same. Following advice I found that helped others, I checked
   my wp-content/plugins directory via FTP. The first plugin, UberMenu, was present,
   but not the latest one I tried to install. I first tried renaming the Ubermenu
   folder to “deactivate” it, even though I had not activated this plugin after 
   install. No change. I then deleted the UberMenu plugin folder from the directory.
   After that, I could access plugins.php from the dashboard and see all my previously
   insatalled plugins. Throughout this, the site appeared to continue to perform
   normally.
 * Deducing that UberMenu might have been the culprit, or perhaps corrupted during
   install, I tried installing the other plugin, image horizontal reel scroll. I
   tried installing internally from the wordpress plugin directory search. The plugin
   appeared to install. The INstall Plugin page loads, goes through the usual install
   steps, gives two links at the bottom “Activate PLugin” or “return to plugin installer”.
   If I click “activate”, I get a blank page. If I click “return to installer” I
   can go to the installer page, but if I try to view installed plugins, I get blank
   screen.
 * I have tried several variations, installing from a downloaded .zip file, or from
   plugin search. No matter what, once I’ve installed a new plugin, I can no longer
   access plugins.php. If I delete the new plugin manually through FTP, I can then
   view the plugins page again.
 * Thinking the new theme may have been conflicting, I switched back to the previous
   theme, same problem. Then I switched to Twenty-Eleven theme, still same problem.
 * Why would I suddenly not be able to add any new plugins? I’m not done developing
   the page and still would like a few more plugins to make it complete.
 * I am using WP 3.8.1 Any suggestions would be appreciated.
 * Michael

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

 *  [Dave Naylor](https://wordpress.org/support/users/wpranger/)
 * (@wpranger)
 * [12 years, 2 months ago](https://wordpress.org/support/topic/adding-new-plug-in-breaks-pluginsphp/#post-4697554)
 * I installed Image Horizontal Reel Scroll Slideshow and the Weaver II theme in
   my sandbox site. Both installed and activated without issue.
 * I can’t test with UberMenu or the Weaver II Pro theme since they are both commercial
   products and as such not supported here. You’ll have to take up the issue with
   your vendors
 *  [sevenspark](https://wordpress.org/support/users/sevenspark/)
 * (@sevenspark)
 * [12 years, 2 months ago](https://wordpress.org/support/topic/adding-new-plug-in-breaks-pluginsphp/#post-4697566)
 * A deactivated plugin won’t be executed, so it can’t be the code inside a deactivated
   plugin that is causing a problem.
 * What does happen in plugins.php is that every plugin – whether active or not –
   will have its header read by WordPress in order to generate the list of available
   plugins.
 * The most likely scenario here is that you have an issue with the way your plugins
   are installed, rather than the plugins themselves; either there is a path issue,
   a corruption issue, or simply bad permissions on the plugin directories. For 
   example, if you’ve uploaded with an FTP user in a different user group than your
   server user, the server may not be able to read those files.
 * The best way to maximize your chances of installing the plugin properly are to
   upload through the WordPress plugin uploader. But if you’ve done that and it’s
   not working, the most common scenario is a permissions issue on your server.
 * To see exactly what the issue is in order to diagnose it, you should enable debugging
   on your site [http://codex.wordpress.org/Debugging_in_WordPress](http://codex.wordpress.org/Debugging_in_WordPress)
 * Hope that helps 🙂
 * Chris
 *  Thread Starter [Michael_onSaba](https://wordpress.org/support/users/michael_onsaba/)
 * (@michael_onsaba)
 * [12 years, 2 months ago](https://wordpress.org/support/topic/adding-new-plug-in-breaks-pluginsphp/#post-4697588)
 * Thanks for the feedback guys. Oddly, the problem solved itself. Shortly after
   submitting the OP, I tried one more thing. Having deleted all recently uploaded
   plugins, I tried installing yet another plugin, just randomly selected, and I
   was able to activate it and still access my plugins.php page. No errors, no blank
   page. So I tried installing to two plugins that I had previously had problems
   with. Both installed, still no problems. I’m still baffled. Don’t know if it 
   was just some temporary server issue, or a corruption/permissions issue, but 
   after two to three hours of not being able to install any plugins without this
   issue popping up, everything went back to normal.
 *  Thread Starter [Michael_onSaba](https://wordpress.org/support/users/michael_onsaba/)
 * (@michael_onsaba)
 * [12 years, 2 months ago](https://wordpress.org/support/topic/adding-new-plug-in-breaks-pluginsphp/#post-4697590)
 * Resolved
 *  [dean](https://wordpress.org/support/users/deanburchell/)
 * (@deanburchell)
 * [12 years, 2 months ago](https://wordpress.org/support/topic/adding-new-plug-in-breaks-pluginsphp/#post-4697756)
 * I experienced this issue as well. It almost seems if I have hit a limit … once
   I try to add one more plugin I am unable to refresh/view the plugins management
   screen (it doesn’t load). I can delete the recently added plugin directory via
   FTP and things return to normal.

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

The topic ‘adding new plug-in breaks plugins.php’ is closed to new replies.

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 5 replies
 * 4 participants
 * Last reply from: [dean](https://wordpress.org/support/users/deanburchell/)
 * Last activity: [12 years, 2 months ago](https://wordpress.org/support/topic/adding-new-plug-in-breaks-pluginsphp/#post-4697756)
 * Status: resolved

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