Error - bad class file


I am getting the following error at my client site:

cannot access com.aspose.slides.Presentation
bad class file:

aspose.slides43419.jar(com/aspose/slides/Presentation.class)) class file has wrong version 48.0, should be 47.0

Please Note version of java is: 1.3.1­_03

Please help !


Just a one question. Did you check “readme” file or system requirements in the Wiki?