Я использую Grails 2.0.0.M1 с несколькими плагинами (spring-security-core-1.2.1, spring-cache-1.3.1). Нет проблем с очисткой и компилированием приложения, только при его запуске.
Это результат выполнения "grails run-app --stacktrace":
ERROR [org.springframework.web.context.ContextLoader]: Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'pluginManager' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Invocation of init method failed; nested exception is java.lang.RuntimeException: Unable to locate constructor with Class parameter for class org.codehaus.groovy.grails.commons.DefaultGrailsServiceClass
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.RuntimeException: Unable to locate constructor with Class parameter for class org.codehaus.groovy.grails.commons.DefaultGrailsServiceClass
... 5 more
Caused by: java.lang.reflect.InvocationTargetException
... 5 more
Caused by: java.lang.ExceptionInInitializerError
... 5 more
Caused by: org.codehaus.groovy.runtime.typehandling.GroovyCastException: Cannot cast object '{}' with class 'groovy.util.ConfigObject' to class 'java.lang.Integer'
... 5 more