Hi,
It seems there is a missing configuration in your config.php, anyway you do not have to remove the text after semi-colon. For example you have an information like this :
database name : machform_form
user name : machform_user
host : localhost
your config.php should be like this :
/** MySQL settings **/
define('DB_NAME', 'machform_form'); //The name of your database. Note that this database must exist before running installer.php
define('DB_USER', 'machform_user'); //Your database username
define('DB_PASSWORD', 'thispassword'); //Your database users password
define('DB_HOST', 'localhost'); //The hostname for your database
however if you have difficulty to installing machform, we'll be glad to help you. Please submit your information to :
http://www.appnitro.com/forms/view.php?id=2
MachForm Support