Hello, I have same problem. This error message appears when exporting JS to the zip file. despec Wrote: Folks, Several weeks ago, the power in our building went down and took the Jasper server 4.1 down as well. The logs for MySQL indicated that the tables were repaired okay. I didn't shutdown the server until today and now suddenly, I get this very large error: 2012-03-09 15:14:41,286 ERROR HibernateDaoImpl,main:58 - Hibernate DataAccessException org.springframework.orm.hibernate3.HibernateSystemException: Cannot instantiate abstract class or interface: com.jaspersoft.jasperserver.api.metadata.common.service.impl.hibernate.persistent.RepoResource; nested exception is org.hibernate.InstantiationException: Cannot instantiate abstract class or interface: com.jaspersoft.jasperserver.api.metadata.common.service.impl.hibernate.persistent.RepoResource Post Edited by haskydawe at 03/13/2012 14:51