Columns after upgrade

[draugluin]

ohh, I only follow the installation guide...

and that's what I got:

Fatal error: Uncaught exception 'Exception' with message 'Database error 1054 - Unknown column 'linkparent' in 'where clause'' in /data/multiserv/users/201262/projects/237104/www/adopties/classes/class_database.php:161 Stack trace: #0 /data/multiserv/users/201262/projects/237104/www/adopties/classes/class_database.php(81): Database->_query('links', Array, 'select', 'linkparent < 1 ...') #1 /data/multiserv/users/201262/projects/237104/www/adopties/functions/functions.php(222): Database->select('links', Array, 'linkparent < 1 ...') #2 /data/multiserv/users/201262/projects/237104/www/adopties/functions/functions.php(458): getlinks() #3 /data/multiserv/users/201262/projects/237104/www/adopties/index.php(23): showpage('Startseite', 'Willkommen bei ...', '03-22-2011') #4 {main} thrown in /data/multiserv/users/201262/projects/237104/www/adopties/classes/class_database.php on line 161

I've no idea, how I shall solve this

If I use a blank database, I've no problem, it works. I
But if I use a my old database (with all existing adoptables, users and so on) I got this error message.

I've all needed colums too. I've took a look.