I follow the steps of this thread :
when I try to start the domain (jasperserver) I got this error in Tomcat Manager :
FAIL - Application at context path /jasperserver could not be started
hereunder the Catalina.out log
2010-11-29 12:39:12,842 ERROR [/jasperserver],http-8080-Processor22:3767 - Exception sending context initialized event to listener instance of class com.jaspersoft.jasperserver.war.util.SpringBeanServletContextPlublisher org.springframework.beans.factory.BeanCreationException org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot load JDBC driver class 'com.mysql.jdbc.Driver' [See nested exception: org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot load JDBC driver class 'com.mysql.jdbc.Driver']]