Openejb wont' start for me, activeio is doing something weird

[David Jencks]

org.apache.geronimo.configs/openejb/2.0-SNAPSHOT/car? 
ServiceModule=org.apache.geronimo.configs/openejb/2.0-SNAPSHOT/ 
car,j2eeType=GBean,name=OpenEjbSystem"
java.lang.ClassCastException: java.util.HashSet
        at  
org.apache.openejb.config.ConfigurationFactory.getSystemProperties 
(ConfigurationFactory.java:550)
        at  
org.apache.openejb.config.ConfigurationFactory.configureService 
(ConfigurationFactory.java:506)
        at  
org.apache.openejb.config.ConfigurationFactory.configureService 
(ConfigurationFactory.java:464)
        at  
org.apache.openejb.config.ConfigurationFactory.configureService 
(ConfigurationFactory.java:453)

Looking closer

org.apache.activeio.journal.active.lockMap=[/Users/david/geronimo/svn/ 
geronimo/server/trunk/assemblies/geronimo-jetty6-jee5/target/geronimo- 
jetty6-jee5-2.0-SNAPSHOT/var/activemq/journal/control.dat]

the value is a HashSet

any ideas?

thanks
david jencks