Krzysztof Miksa [http://community.jboss.org/people/dejewi] created the discussion "Re: jBPM 5.2 setup on Jboss7.1b error" To view the discussion, visit: http://community.jboss.org/message/644078#644078 -------------------------------------------------------------- I have solved it I my case when I opened class ProcessInstanceInfo then my IDE start highlight @CollectionOfElements annotation in line 66. So solution to my exception[1] was to add a hibernate-annotations dependency/library to my pom.xml[2] I hope that will help you too :) [1] Caused by: org.hibernate.MappingException: Could not determine type for: java.util.Set, at table: ProcessInstanceInfo, for columns: [org.hibernate.mapping.Column(eventTypes)] [2]   <dependency>             <groupId>org.hibernate</groupId>             <artifactId>hibernate-annotations</artifactId>             <version>3.4.0.GA</version>         </dependency> -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/644078#644078] Start a new discussion in jBPM at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]