[rules-users] Updating to 5.1 - what jars do I need to replace?

Hi guys, Really struggling with what jars I need to replace to update to Drools 5.1. I've tried replacing just the "drools" jars, but I get a "java.io.InvalidClassException: org.drools.rule.DialectRuntimeRegistry; local class incompatible: stream classdesc serialVersionUID = 5308493362083281112, local class serialVersionUID = 510" error, so I assume I need to replace more - but I don't know which. I tried replacing all of the ones that had new versions in the drools 5.1 binaries, but this caused Hibernate to fail on runtime, claiming it couldnt understand annotations! The following is a list of the jars currently in the project for Drools 5.0 - I did not put together this list originally, so some might not be needed but I dont know which. I would much appreciate some help working out which jars I need to change to get my code to talk to Guvnor 5.1... Main lib: activation-1.1.jar antlr-2.7.6.jar antlrworks-1.3.1.jar btm-1.3.2.jar com.springsource.org.apache.commons.pool-1.5.3.jar commons-collections-3.1.jar commons-dbcp-1.4.jar commons-io-1.3.2.jar commons-lang-2.4.jar commons-logging.jar core-3.4.2.v_883_R34x.jar dom4j.jar drools-ant-5.0.1.jar drools-api-5.0.1.jar drools-compiler-5.0.1.jar drools-core-5.0.1.jar drools-decisiontables-5.0.1.jar drools-persistence-jpa-5.0.1.jar drools-process-task-5.0.1.jar drools-solver-core-5.0.1.jar drools-templates-5.0.1.jar drools-verifier-5.0.1.jar drools-workitems-5.0.1.jar ejb3-persistence.jar hibernate-annotations.jar hibernate-commons-annotations.jar hibernate-core.jar hibernate-entitymanager-3.3.2.GA.jar hibernate3.jar janino-2.5.15.jar jars.txt javassist-3.9.0.GA.jar joda-time-1.6.jar jstl.jar jta-1.1.jar junit-3.8.1.jar log4j-1.2.15.jar mail-1.4.jar mvel2-2.0.10.jar mysql-connector-java-5.1.12-bin.jar persistence-api-1.0.jar servlet-api-2.3.jar slf4j-api-1.5.6.jar slf4j-log4j12-1.5.10.jar spring-2.5.6.jar spring-beans-2.5.6.jar spring-context-2.5.6.jar spring-context-support-2.5.6.jar spring-core-2.5.6.jar spring-test-2.5.6.jar spring-web-2.5.6.jar spring-webmvc.jar spring.jar standard.jar xpp3_min-1.1.4c.jar xstream-1.3.1.jar WEBINF: antlr-2.7.6.jar antlrworks-1.3.1.jar com.springsource.org.apache.commons.pool-1.5.3.jar commons-collections-3.1.jar commons-dbcp-1.4.jar commons-lang-2.4.jar commons-logging.jar dom4j.jar drools-ant-5.0.1.jar drools-api-5.0.1.jar drools-compiler-5.0.1.jar drools-core-5.0.1.jar drools-decisiontables-5.0.1.jar drools-persistence-jpa-5.0.1.jar drools-process-task-5.0.1.jar drools-templates-5.0.1.jar drools-verifier-5.0.1.jar drools-workitems-5.0.1.jar ejb3-persistence.jar hibernate-annotations.jar hibernate-commons-annotations.jar hibernate-core.jar hibernate3.jar javassist-3.9.0.GA.jar jstl.jar jta-1.1.jar log4j-1.2.15.jar mvel2-2.0.10.jar mysql-connector-java-5.1.12-bin.jar slf4j-api-1.5.6.jar slf4j-log4j12-1.5.10.jar spring-webmvc.jar spring.jar standard.jar test.txt xstream-1.3.1.jar Cheers, Stephen -- The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336.