#19 Error at net.sourceforge.floggy.persistence.impl.Persistable

[Anonymous]

Floggy works wonderful.. but when I start and return the find method sometimes it dispatch this error i dont know what it
....
java.lang.NoClassDefFoundError: sun/reflect/ConstructorAccessorImpl
at sun.misc.Unsafe.defineClass(Native Method)
at sun.reflect.ClassDefiner.defineClass(Unknown Source)
at sun.reflect.MethodAccessorGenerator$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.reflect.MethodAccessorGenerator.generate(Unknown Source)
at sun.reflect.MethodAccessorGenerator.generateConstructor(Unknown Source)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at java.lang.Class.newInstance0(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at net.sourceforge.floggy.persistence.impl.PersistableManagerImpl.createInstance(Unknown Source)
at net.sourceforge.floggy.persistence.impl.PersistableManagerImpl.find(Unknown Source)
at net.sourceforge.floggy.persistence.impl.PersistableManagerImpl.find(Unknown Source)
at controller.database.DAO.getPersistable(DAO.java:175)
at view.ListClientes.refreshList(ListClientes.java:68)

[Thiago Leão Moreira]

So few informations to try to reproduce.