Here is a portion of the error we are getting.
The following error occurred at startup: Unable to start OpenMRS. Error thrown was: org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘messageSourceServiceTarget’ defined in class path resource [applicationContext-service.xml]: Cannot resolve reference to bean ‘mutableResourceBundleMessageSource’ while setting bean property ‘activeMessageSource’; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘mutableResourceBundleMessageSource’ defined in class path resource [applicationContext-service.xml]: Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘org.springframework.transaction.interceptor.TransactionAttributeSourceAdvisor#0’ defined in class path resource [applicationContext-service.xml]: Cannot resolve reference to bean ‘transactionInterceptor’ while setting bean property ‘transactionInterceptor’; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘transactionInterceptor’ defined in class path resource [applicationContext-service.xml]: Cannot resolve reference to bean ‘transactionManager’ while setting bean property ‘transactionManager’; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘transactionManager’ defined in class path resource [applicationContext-service.xml]: Cannot resolve reference to bean ‘sessionFactory’ while setting bean property ‘sessionFactory’; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘sessionFactory’: Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: public java.util.Map org.openmrs.api.db.hibernate.HibernateSessionFactoryBean.interceptors; nested exception is org.springframework.beans.factory.CannotLoadBeanClassException: Error loading class [org.openmrs.module.dataimporttool.DataImportTool] for bean with name ‘dit’ defined in URL [jar:file:/tmp/tomcat6-tomcat6-tmp/1464938934191.openmrs-lib-cache/dataimporttool/dataimporttool.jar!/moduleApplicationContext.xml]: problem with class file or dependent class; nested exception is java.lang.UnsupportedClassVersionError: org/openmrs/module/dataimporttool/DataImportTool : Unsupported major.minor version 51.0 Related cause: org.springframework.beans.factory.CannotLoadBeanClassException: Error loading class [org.openmrs.module.dataimporttool.DataImportTool] for bean with name ‘dit’ defined in URL [jar:file:/tmp/tomcat6-tomcat6-tmp/1464938934191.openmrs-lib-cache/dataimporttool/dataimporttool.jar!/moduleApplicationContext.xml]: problem with class file or dependent class; nested exception is java.lang.UnsupportedClassVersionError: org/openmrs/module/dataimporttool/DataImportTool : Unsupported major.minor version 51.0 Related cause: org.springframework.beans.factory.CannotLoadBeanClassException: Error loading class [org.openmrs.module.dataimporttool.resources.DataImportToolValidator] for bean with name ‘dataImportToolValidator’ defined in URL [jar:file:/tmp/tomcat6-tomcat6-tmp/1464938934191.openmrs-lib-cache/dataimporttool/dataimporttool.jar!/webModuleApplicationContext.xml]: problem with class file or dependent class; nested exception is java.lang.UnsupportedClassVersionError: org/openmrs/module/dataimporttool/resources/DataImportToolValidator : Unsupported major.minor version 51.0 Related cause: org.springframework.beans.factory.CannotLoadBeanClassException: Error loading class [org.openmrs.module.dataimporttool.web.controller.DataImportToolStartMigrationController] for bean with name ‘dataImportToolStartMigrationController’ defined in URL [jar:file:/tmp/tomcat6-tomcat6-tmp/1464938934191.openmrs-lib-cache/dataimporttool/dataimporttool.jar!/webModuleApplicationContext.xml]: problem with class file or dependent class; nested exception is java.lang.UnsupportedClassVersionError: org/openmrs/module/dataimporttool/web/controller/DataImportToolStartMigrationController : Unsupported major.minor version 51.0 Related cause: org.springframework.beans.factory.CannotLoadBeanClassException: Error loading class [org.openmrs.module.dataimporttool.web.controller.ErrorController] for bean with name ‘errorController’ defined in URL [jar:file:/tmp/tomcat6-tomcat6-tmp/1464938934191.openmrs-lib-cache/dataimporttool/dataimporttool.jar!/org/openmrs/module/dataimporttool/web/controller/ErrorController.class]: problem with class file or dependent class; nested exception is java.lang.UnsupportedClassVersionError: org/openmrs/module/dataimporttool/web/controller/ErrorController : Unsupported major.minor version 51.0 Related cause: org.springframework.beans.factory.CannotLoadBeanClassException: Error loading class [org.openmrs.module.dataimporttool.web.controller.StatusController] for bean with name ‘statusController’ defined in URL [jar:file:/tmp/tomcat6-tomcat6-tmp/1464938934191.openmrs-lib-cache/dataimporttool/dataimporttool.jar!/org/openmrs/module/dataimporttool/web/controller/StatusController.class]: problem with class file or dependent class; nested exception is java.lang.UnsupportedClassVersionError: org/openmrs/module/dataimporttool/web/controller/StatusController : Unsupported major.minor version 51.0 Related cause: org.springframework.beans.factory.CannotLoadBeanClassException: Error loading class [org.openmrs.module.dataimporttool.web.controller.ContinueMigrationController] for bean with name ‘continueMigrationController’ defined in URL [jar:file:/tmp/tomcat6-tomcat6-tmp/1464938934191.openmrs-lib-cache/dataimporttool/dataimporttool.jar!/org/openmrs/module/dataimporttool/web/controller/ContinueMigrationController.class]: problem with class file or dependent class; nested exception is java.lang.UnsupportedClassVersionError: org/openmrs/module/dataimporttool/web/controller/ContinueMigrationController : Unsupported major.minor version 51.0 Related cause: