[driver cannot be found when trying to create new report]

Hi all,

I am using jaspersoft studio 5.5.1

When creating a mysql data adapter everything works fine and the test connection works.

When trying to create a new report i get an exception  java.lang.ClassNotFoundException: com.mysql.jdbc.Driver cannot be found by net.sf.jasperreports_5.5.1.final

 

What i am doing wrong?

 

Thanks,

David