I have followed the instructions here
http://plugins.roundcube.net/ on my roundcube 0.95 installation (installed from the Debian Wheezy package) and everything seemed to go fine with no error messages. I have tried to activate the plugins by editing the appropriate section of my main.inc.php file as follows:
$rcmail_config['plugins'] = array(
'plugin-installer',
'plugin-manager',
'jqueryui',
'emoticons'
);
Unfortunately, nothing happens. I cannot see any evidence that any of the plugins has activated. There are no changes in the UI at all as far as I can see. There are no obvious problems with my installation otherwise - everything else seems to work as I'd expect.
I'm almost certainly missing out some simple step but I have followed all the instructions I can find and none of them seems to mention doing anything I haven't set out above. I'd appreciate it if someone can suggest what I am doing wrongly.
[Edit]
I've just checked the logs and they are full of the following errors:
[13-Sep-2014 10:53:20 +0100]: PHP Error: Failed to load plugin file /var/lib/roundcube/plugins/plugin-manager/plugin-manager.php in /usr/share/roundcube/program/include/rcube_plugin_api.php on line 204 (GET /?_task=mail&_action=list&_mbox=INBOX&_refresh=1&_remote=1&_unlock=loading1410602000480&_=1410602000490)
This doesn't mean much to me but I'll investigate. Perhaps it means more to someone more experienced with Roundcube.