Can't install plug-ins or themes after upgrading to 3.0.1

It sounds like something is still in the database even after you disabled the plugins and themes that is causing some issues.

I think what I would do is start from a fresh install again, create a backup of the working WP install and start getting things installed and tested one by one. There is obviously some plugin or theme that is failing so if you have to track down the “needle in the hay stack” then it may require you to create many backups in between plugins while you test the ability to login and logout of the admin after the installs

Doing it this way may take a bit more time but will save you when/if it fails again and you have to restore.

Good luck

Add this to the top of your .htaccess file:

AddType x-mapp-php5 .php
AddHandler x-mapp-php5 .php

James

What does that do?

I was having a similar problem to the orignal poster and tried your fix.

However now when I click to go to the plugin page I get this.

ID, ‘plugins_last_view’, $status); $page = isset($_REQUEST[‘paged’]) ? $_REQUEST[‘paged’] : 1; //Clean up request URI from temporary args for screen options/paging uri’s to work as expected. $_SERVER[‘REQUEST_URI’] = remove_query_arg(array(‘error’, ‘deleted’, ‘activate’, ‘activate-multi’, ‘deactivate’, ‘deactivate-multi’, ‘_error_nonce’), $_SERVER[‘REQUEST_URI’]); if ( !empty($action) ) { $network_wide = false; if ( ( isset( $_GET[‘networkwide’] ) || ‘network-activate-selected’ == $action ) && is_multisite() && current_user_can( ‘manage_network_plugins’ ) ) $network_wide = true; switch ( $action ) { case ‘activate’: if ( ! current_user_can(‘activate_plugins’) ) wp_die(__(‘You do not have sufficient permissions to activate plugins for this site.’)); check_admin_referer(‘activate-plugin_’ . $plugin); $result = activate_plugin($plugin, ‘plugins.php?error=true&plugin=’ . $plugin, $network_wide); if ( is_wp_error( $result ) ) { if ( ‘unexpected_output’ == $result->get_error_code() ) { $redirect = ‘plugins.php?error=true&charsout=’ . strlen($result->get_error_data()) . ‘&plugin=’ . $plugin; wp_redirect(add_query_arg(‘_error_nonce’, wp_create_nonce(‘plugin-activation-error_’ . $plugin), $redirect)); exit; } else { wp_die($result); } } $recent = (array)get_option(‘recently_activated’); if ( isset($recent[ $plugin ]) ) { unset($recent[ $plugin ]); update_option(‘recently_activated’, $recent); } if ( isset($_GET[‘from’]) && ‘import’ == $_GET[‘from’] ) { wp_redirect(“import.php?import=” . str_replace(‘-importer’, ”, dirname($plugin)) ); // overrides the ?error=true one above and redirects to the Imports page, striping the -importer suffix } else { wp_redirect(“plugins.php?activate=true&plugin_status=$status&paged=$page”); // overrides the ?error=true one above } exit; break; case ‘activate-selected’: case ‘network-activate-selected’: if ( ! current_user_can(‘activate_plugins’) ) wp_die(__(‘You do not have sufficient permissions to activate plugins for this site.’)); check_admin_referer(‘bulk-manage-plugins’); $plugins = isset( $_POST[‘checked’] ) ? (array) $_POST[‘checked’] : array(); $plugins = array_filter($plugins, create_function(‘$plugin’, ‘return !is_plugin_active($plugin);’) ); // Only activate plugins which are not already active. if ( empty($plugins) ) { wp_redirect(“plugins.php?plugin_status=$status&paged=$page”); exit; } activate_plugins($plugins, ‘plugins.php?error=true’, $network_wide); $recent = (array)get_option(‘recently_activated’); foreach ( $plugins as $plugin => $time) if ( isset($recent[ $plugin ]) ) unset($recent[ $plugin ]); update_option(‘recently_activated’, $recent); wp_redirect(“plugins.php?activate-multi=true&plugin_status=$status&paged=$page”); exit; break; case ‘update-selected’ : check_admin_referer( ‘bulk-manage-plugins’ ); if ( isset( $_GET[‘plugins’] ) ) $plugins = explode( ‘,’, $_GET[‘plugins’] ); elseif ( isset( $_POST[‘checked’] ) ) $plugins = (array) $_POST[‘checked’]; else $plugins = array(); $title = __( ‘Upgrade Plugins’ ); $parent_file = ‘plugins.php’; require_once( ‘./admin-header.php’ ); echo ‘
‘; screen_icon(); echo ‘
‘ . esc_html( $title ) . ‘
‘; $url = ‘update.php?action=update-selected&plugins=’ . urlencode( join(‘,’, $plugins) ); $url = wp_nonce_url($url, ‘bulk-update-plugins’); echo “

How do I undo whatever your suggested fix did?

I get the same big chunk of code after adding the code to my .htaccess to force 1and1 to use php5. It lasts for about six seconds and then the plugins page loads… but with a notice at the top saying “plugin deactivated.”

Not a total dealbreaker, but annoying. How do I make this go away?

The code, per 1&1’s support department, is supposed to enable PHP 5 on your 1&1 hosting account. Of course, it may not properly depending on how your hosting provider has PHP configured. To undo it, just remove the code.

James,
Thanks for the input. I finally had time tonight to work on my installation again to straighten things out. I think one problem I was having was that the .htaccess file wasn’t being generated for some reason. I copied the file from my previous installation and added the lines of code you recommended to force 1&1 to use PHP 5 and it works great now. I installed a handful of themes and plug-ins to test everything out and it works better than ever.

You’re welcome!