Fix Roundcube After Updating to ISPConfig 3.0.5.2

Fix Roundcube After Updating to ISPConfig 3.0.5.2

After I decided to update my ISPConfig Server to 3.0.5.2, everything went good except for Roundcube. Now every time I open Roundcube I’ll get this 500 Internal Server Error.
To fix the problem just open your roundcube.conf httpd config file and insert the lines in bold after


Options FollowSymLinks
#insert these lines

AddType application/x-httpd-php .php
php_flag magic_quotes_gpc Off
php_flag track_vars On
php_admin_flag allow_url_fopen Off
php_value include_path .
php_admin_value upload_tmp_dir /path/to/my/roundcube/temp
php_flag register_globals off

Now hopefully with those apache directives added to your roundcube.conf file, everything should be running smoothly again.
Link: http://aspiredevice.com/fix-roundcube-after-updating-to-ispconfig-3-0-5-2/