my fault: I´m using mysql server version 5.5.8. Not all tables where created during the install. In this mysql version the CREATE TABLE statment no longer supports the TYPE qualifier. I used the new qualifier ENGINE and now the tables were created.
Just one other error, maybe also caused by my mysql server version?
"Strict Standards: Declaration of db::connect() should be compatible with that of db_core::connect() in C:\xampp\htdocs\knowledgeroot\include\class-mysql.php on line 160"
PHP Version: 5.3.5
Server Software: Apache/2.2.17 (Win32) mod_ssl/2.2.17 OpenSSL/0.9.8o PHP/5.3.4 mod_perl/2.0.4 Perl/v5.10.1