Install Problem - Joomla! Forum - community, help and support

i trying complete install , getting error

notice: undefined index: dbtype in /home/kaizbou/public_html/joomla/installation/installer/models/model.php on line 679

fatal error: call undefined function: getnulldate() in /home/kaizbou/public_html/joomla/installation/installer/helper.php on line 281

can please have never installed before, please let me know info supposed put in box , resolve error.

this page on

main configuration
site name:
enter name of joomla! site.
site name
confirm admin email , password

enter e-mail address, e-mail address of site superadministrator.
your e-mail
admin password
confirm admin password
load sample data, restore or migrate backed content


thanks

i managed work now.  closed down installation , started again , worked.