java.io.InvalidClassException: com.izforge.izpack.api.data.Pack; local class incompatible: stream classdesc serialVersionUID = -7841139470853935196, local class serialVersionUID = -8210246855986030287

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java.io.InvalidClassException: com.izforge.izpack.api.data.Pack; local class incompatible: stream classdesc serialVersionUID = -7841139470853935196, local class serialVersionUID = -8210246855986030287
at java.io.ObjectStreamClass.initNonProzy(ObjectStreamClass.java:616)

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