Calling a lotus script agent from a java agent

i have an agent trying to call a lotusscript agent from a java agent. thax inadvance

12/09/2003 11:10:25 AMgr: Agent error message: java.lang.NullPointerException

12/09/2003 11:10:25 AMgr: error message: at FilesFTP.NotesMain(FilesFTP.java:88)

12/09/2003 11:10:25 AMgr: error message: at lotus.domino.AgentBase.runNotes(Unknown Source)

12/09/2003 11:10:25 AMgr: Agent error message: at lotus.domino.NotesThread.run(NotesThread.java:208)