Grails Enum Works on Jetty, breaks on Tomcat

I have developed this small app and run it on Jetty with no problems...

Bug.groovy:

package itsafeature

class Bug {

    String name
    String description
    Priority priority

    Project project

    static belongsTo = Project

    static constraints = {
        name(size:10..150)
        description(size:25..1500)
        project(nullable:false)
        priority(nullable:false)
    }

    String toString() {
        return "${priority}:${name}"
    }
}
enum Priority {HIGH(5), MEDIUM(3),LOW(1)
    private Priority(int val){
        value = val
    }
    private final int value
    int value() {
        value
    }
}

When I use Netbeans to deploy directly to it's Grails Jetty Server, this works exactly as you'd expect. The Priority is written to my database as a string, and it does what I want.

However, If I take the project and do a "build", it creates a "production" build of the application (my datasource file is the same for all builds), and I put it in my "webapps" folder of a local tomcat server, and I see the following stacktrace:

SEVERE: Exception sending context initialized event to listener instance of class org.codehaus.groovy.grails.web.context.GrailsContextLoaderListener
org.springframework.beans.factory.BeanCreationException开发者_开发百科: Error creating bean with name 'grailsApplication' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Invocation of init method failed; nested exception is java.lang.ExceptionInInitializerError
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1412)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
        ... SNIP! ...
Caused by: java.lang.ExceptionInInitializerError
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:247)
Caused by: groovy.lang.GroovyRuntimeException: Could not find matching constructor for: Priority(java.lang.String, java.lang.Integer)
        at Priority.<clinit>(Priority.groovy:10)
        ... 2 more

What should I be looking at to narrow down this issue? I only have one groovy installed on windows, with the GROOVY_HOME pointed to that, same with GRAILS. Does Jetty have it's own version of these runtimes? Or is this really an application server problem?

There is a grails command that says "tomcat", not sure if that has anything to do with this, but I'm not using it

Move the enum to its own file in src/groovy (in the same package or another, but it can't be in the default package and be accessed by a domain class in a package).

btw - you don't need Groovy or GROOVY_HOME with Grails - it comes with the version of the Groovy jar that it works with and that gets deployed in your war.