hello every body;
i create a spring ROO(1.2 release) project with STS i use this list of command :

jpa setup --provider DATANUCLEUS --database HYPERSONIC_IN_MEMORY
entity jpa --class ~.Employee
field string --fieldName name
web mvc setup
web mvc all --package ~.web

when i start it to the server i have this error :
2012-02-28 11:29:47,259 [Thread-10] ERROR DataNucleus.Persistence - Error : An error occurred trying to instantiate an instance of the API adapter "org.datanucleus.api.jpa.JPAAdapter" (perhaps you dont have the requisite datanucleus-api-XXX jar in the CLASSPATH, or the api jar for the persistence spec you are using?) : {1}

all the dependency already existing in my CLASSPATH
so can some one help me please !!!