4.0 Upgrade makes ALL plugins disappear

Is the Plugins list showing that no plugins are installed or did they just all get deactivated?

& ran the installer

Which “installer” are you referring to here?

If you are using some custom installer provided by your hosting service, then it may or may not preserve plugins. We generally recommend against such installers, since we know not what they do.

Good questions…all of them.

Pippin: No plugins installed at all. I look in the directory and there are 9 there. I roll back to my previous backup, and they all appear.

Samuel: I used the installer inside the admin control panel. The installation completed without error. As I told Pippin, the plugins page shows no plugins as being installed, although they are most certainly on disk in the wp-content/plugins directory.

I don’t use a hosting provider. I host my own servers. RHCSA/RHCE/Puppet Certified. “We don’t need no stinking providers”. ??

Are you able to install new plugins?

Yes. It simply cannot see pre-existing plugins from before the upgrade. I thought these were all in the database and simply read from there, and sourced from disk. Why would WP lost track of files on disk like this?

I have a similar problem

Have just upgraded to WP 4 and now the plugin browzer does not show anything.

I have re-installed WP4 but still the same problem.

Can you check what the file permissions are set to for the plugin files?

The same thing happened to my plugins when I upgraded to 4.0 yesterday. The file permissions are set to read/write/execute for User and read/execute for Group and World. I tried to reinstall my UpdraftPlus plugin, but the installation failed because the target directory already exists.

I thought these were all in the database and simply read from there, and sourced from disk. Why would WP lost track of files on disk like this?

Actually, when you look at the plugins screen, it’s doing a search of the files on disk. The database keeps track of which plugins are active, but the plugin list itself is built from the files directly by reading their headers.

Check the permissions of the files and the directories. Also the ownership of the files. It may not be able to see them or read them, for some reason.

What should the permissions be set to? If version 3.9.2 could read the files fine, shouldn’t 4.0 be able to as well? My permissions and ownership appear to be correct, so I need to either find a fix quickly or figure out how to go back to the previous version of WP until a fix comes out.

It’s not really a question of what should they be set to, it’s a question of you looking and finding out what are they actually set to, and how does that compare with the other WordPress files.

Pick a plugin that you’re not seeing in the plugins screen. Look at the directory and find out who the owner and group are, and what the permissions are on the directory and the files in that directory. Then do the same for the normal WordPress files like wp-settings.php. Are they different somehow?

Just installed 4.0, and thought I had backed up. My updraft backup was not parking the files anywhere, and I was not aware of that. (my fault). However, now my YOST SEO, and Tag Cloud, Editor Scroll, Add Media, and Easy Recipe Plus are gone. The new version was supposed to improve most of those things. Is there any way I can get a previous version to download, since my back up did not work?

The owner, group, and permissions for the plugin directory and files are identical to that of the normal WP files like wp-settings.php.

I’m having the same problem. I installed 4.0. It asked me to log-in again. I then went to update the plugins and themes, then all the plugins went away, even JetPack – all of them. It says in the Plugins page: You do not appear to have any plugins available at this time.

I tried reinstalling JetPack and it says:

Destination folder already exists. /home/content/62/8635362/html/social-media-training/wp-content/plugins/jetpack/

Plugin install failed.

I’m going to try to uninstall 4.0 until you guys fix the issue. I don’t have time to try this and that.

Sorry, guys… had a busy weekend thus far.

All directories are 0755 and all files are 0644 (UMASK 022).

When you install a new plugin via the plugin installer, it does precisely the same thing by making all directories 0755 and all files 0644.

Again, everything is in place, I do an upgrade and it loses a whole subsystem while maintaining all appropriate permissions. I’m at the point where I’m going to say this is a bug.