Unit and Integration tests fail

[alxndrsn]

Running grails test-app unit: integration: I get a number of failures such as:

| Failure:  Test listing supported plugins with offset, limit and total(org.grails.plugin.PluginServiceSpec)
|  org.codehaus.groovy.runtime.typehandling.GroovyCastException: Cannot cast object 'Tue Jun 12 15:46:12 EAT 2007' with class 'java.util.Date' to class 'org.joda.time.DateTime'
    at grails.buildtestdata.DomainInstanceBuilder.setDomainPropertyValue(DomainInstanceBuilder.groovy:164)
    at grails.buildtestdata.DomainInstanceBuilder.populateInstance_closure4(DomainInstanceBuilder.groovy:142)
    at grails.buildtestdata.DomainInstanceBuilder.populateInstance(DomainInstanceBuilder.groovy:141)
    at grails.buildtestdata.DomainInstanceBuilder.build(DomainInstanceBuilder.groovy:129)
    at grails.buildtestdata.DomainInstanceBuilder.build(DomainInstanceBuilder.groovy:128)
    at grails.buildtestdata.BuildTestDataService.addBuildMethods_closure5(BuildTestDataService.groovy:46)
    at org.grails.plugin.PluginServiceSpec.setup(PluginServiceSpec.groovy:20)

and

| Running 41 spock tests... 41 of 41
| Failure:  Test plugin update event processing(org.grails.plugin.PluginUpdateServiceSpec)
|  org.codehaus.groovy.runtime.typehandling.GroovyCastException: Cannot cast object 'AUTO' with class 'org.hibernate.FlushMode' to class 'javax.persistence.FlushModeType'
    at org.grails.plugin.PluginUpdateService.onApplicationEvent_closure1(PluginUpdateService.groovy:71)
    at org.grails.datastore.gorm.GormStaticApi.withSession_closure19(GormStaticApi.groovy:648)
    at org.grails.datastore.mapping.core.DatastoreUtils.execute(DatastoreUtils.java:301)
    at org.grails.datastore.gorm.AbstractDatastoreApi.execute(AbstractDatastoreApi.groovy:34)
    at org.grails.datastore.gorm.GormStaticApi.withSession(GormStaticApi.groovy:647)
    at org.grails.plugin.PluginUpdateService.onApplicationEvent(PluginUpdateService.groovy:57)
    at org.grails.plugin.PluginUpdateServiceSpec.Test plugin update event processing(PluginUpdateServiceSpec.groovy:76)

and

| Running 53 unit tests... 46 of 53
| Failure:  testHomePopulatesFeaturedPluginsByDefault(org.grails.plugin.PluginControllerTests)
|  groovy.lang.MissingMethodException: No signature of method: org.grails.taggable.Tag.withDatastoreSession() is applicable for argument types: () values: []
Possible solutions: withDatastoreSession(groovy.lang.Closure)
    at grails.gorm.DetachedCriteria.withPopulatedQuery(DetachedCriteria.groovy:873)
    at grails.gorm.DetachedCriteria.list(DetachedCriteria.groovy:638)
    at grails.gorm.DetachedCriteria.list(DetachedCriteria.groovy:637)
    at org.grails.plugin.PluginController.list(PluginController.groovy:73)
    at org.grails.plugin.PluginControllerTests.testHomePopulatesFeaturedPluginsByDefault(PluginControllerTests.groovy:48)

Is there something wrong with my config, or something wrong with the project itself?