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java.lang.ClassCastException: java.lang.String cannot be cast to org.icepdf.core.pobjects.Reference	at org.icepdf.core.pobjects.Page.initPageContents(Page.java:230)	at org.icepdf.core.pobjects.Page.init(Page.java:363)	at org.icepdf.ri.common.views.PageViewComponentImpl$PageInitializer.run(PageViewComponentImpl.java:1169)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)	at java.lang.Thread.run(Thread.java:745)