Abbot Java GUI Testing Framework

Hi I am new to the test script Editor, so firstly I am trying to launch my application using the test editor. Main class and class path are Ok, however when I press the run button it gives the following error and exit... Can anyone help what could be this error?
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Error: abbot.ExitException: Application exit denied (-1) on Thread[Threaded Launch com.ericsson.mediation.client.MediationClient.main([]),6,AUT Thread Group for Script Editor (root):0]
in step 'Launch com.ericsson.mediation.client.MediationClient.main([])'
at C:\abbot-1.0.2\src\example\MMGUI:4
abbot.ExitException: Application exit denied (-1) on Thread[Threaded Launch com.ericsson.mediation.client.MediationClient.main([]),6,AUT Thread Group for Script Editor (root):0]
at abbot.NoExitSecurityManager.checkExit(NoExitSecurityManager.java:40)
at abbot.editor.ScriptEditor$EditorSecurityManager.checkExit(ScriptEditor.java:2842)
at java.lang.Runtime.exit(Unknown Source)
at java.lang.System.exit(Unknown Source)
at com.ericsson.mediation.client.MediationClient.main(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at abbot.script.Call.invoke(Call.java:194)
at abbot.script.Call.runStep(Call.java:129)
at abbot.script.Launch.synchronizedRunStep(Launch.java:138)
at abbot.script.Launch$1.run(Launch.java:186)