Having some pink square instead of images in RoundCube Webmail without any function or button to enable images?
Well it happened to me after an upgrade. To fix this edit your RoundCube configuration file :
/path/to/roundcube/config/config.inc.php
Locate the following line (it should be around #90) :
// mime magic database $config['mime_magic'] = '/usr/share/misc/magic';
Comment it (with //) and append the following :
$config['mime_magic'] = null;
Refresh your Web client and images should now appear in the message body.