java.lang.NullPointerException: This exception has no message.

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This exception has no message.
java.lang.NullPointerException: 	at com.solarmetric.modules.tools.license.LicenseChecker.isValid(Unknown Source)	at com.solarmetric.kodo.conf.JDOVersion.check(Unknown Source)	at com.solarmetric.kodo.conf.JDOVersion.checkValid(Unknown Source)	at com.solarmetric.kodo.impl.jdbc.schema.SchemaTool.(UnknownSource)	at com.solarmetric.kodo.impl.jdbc.JDBCPersistenceManagerFactory.loadPersistentTypes(Unknown Source)	at com.solarmetric.kodo.impl.jdbc.JDBCPersistenceManagerFactory.setup(UnknownSource)	at com.solarmetric.kodo.runtime.PersistenceManagerFactoryImpl.freeze(UnknownSource)	at com.solarmetric.kodo.impl.jdbc.JDBCPersistenceManagerFactory.getPersistenceManagerFactory(Unknown Source)	at java.lang.reflect.Method.invoke(Native Method)	at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java:263)	at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java:218)	at jdoEval.ClientDelegateLocal.(ClientDelegateLocal.java:53)	at jdoEval.Client.(Client.java:23)	at jdoEval.Client.main(Client.java:29)