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

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java.lang.NullPointerException:
at java.lang.System.arraycopy(Native Method)
at com.octetstring.vde.util.guid.GuidParamGenerator.generateNodeID(GuidParamGenerator.java:47)
at com.octetstring.vde.util.guid.GuidStateManager.initializeGUIDParameters(GuidStateManager.java:59)
at com.octetstring.vde.util.guid.GuidStateManager.init(GuidStateManager.java:30)
at com.octetstring.vde.util.guid.GuidStateManager.clinit(GuidStateManager.java:23)

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