Erro na execução de aplicação medica de demostração

olá a todos.

instalei a seguinte aplicação MEDICAL_GUI_INSTALLER:

http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=TWR-K53N512&fpsp=1&tab=Design_Tools_Tab

Estou usando o WIN7 Professional 64 bits com a JDK1.7.0.17

Mas a aplicação quando executada esta apresentando o seguinte erro:

C:\Freescale\Medical GUI>java -jar Medical_GUI_v2.2.jar

Exception in thread “AWT-EventQueue-0” java.lang.NoClassDefFoundError: gnu/io/Co

mmPortIdentifier

at java.lang.Class.getDeclaredMethods0(Native Method)

at java.lang.Class.privateGetDeclaredMethods(Class.java:2451)

at java.lang.Class.getDeclaredMethod(Class.java:1954)

at java.awt.Component.isCoalesceEventsOverriden(Component.java:6190)

at java.awt.Component.access$500(Component.java:188)

at java.awt.Component$3.run(Component.java:6144)

at java.awt.Component$3.run(Component.java:6142)

at java.security.AccessController.doPrivileged(Native Method)

at java.awt.Component.checkCoalescing(Component.java:6141)

at java.awt.Component.(Component.java:6110)

at java.awt.Container.(Container.java:276)

at java.awt.Window.(Window.java:437)

at java.awt.Window.(Window.java:594)

at java.awt.Dialog.(Dialog.java:665)

at java.awt.Dialog.(Dialog.java:409)

at javax.swing.JDialog.(JDialog.java:271)

at Medical.PortChooser.(PortChooser.java:99)

at Medical.MedicalCommander.(MedicalCommander.java:65)

at Medical.MedicalControl.(MedicalControl.java:38)

at Medical.MedicalControl$1.run(MedicalControl.java:62)

at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)

at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:727)

at java.awt.EventQueue.access$200(EventQueue.java:103)

at java.awt.EventQueue$3.run(EventQueue.java:688)

at java.awt.EventQueue$3.run(EventQueue.java:686)

at java.security.AccessController.doPrivileged(Native Method)

at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDo

main.java:76)

at java.awt.EventQueue.dispatchEvent(EventQueue.java:697)

at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThre

ad.java:242)

at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.

java:161)

at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThre

ad.java:150)

at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)

at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)

    at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)

Caused by: java.lang.ClassNotFoundException: gnu.io.CommPortIdentifier

at java.net.URLClassLoader$1.run(URLClassLoader.java:366)

at java.net.URLClassLoader$1.run(URLClassLoader.java:355)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(URLClassLoader.java:354)

at java.lang.ClassLoader.loadClass(ClassLoader.java:423)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)

at java.lang.ClassLoader.loadClass(ClassLoader.java:356)

… 34 more

alguem poderia me ajudar?

obrigado.

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