We get the following code. Notice the file is 12Mb so it might have some hidden objects
com.aspose.slides.internal.m.gk: Parsing of table ‘GPOS’ has failed.
at com.aspose.slides.internal.m.gm.do(Unknown Source)
at com.aspose.slides.internal.m.gm.int(Unknown Source)
at com.aspose.slides.internal.m.gm.do(Unknown Source)
at com.aspose.slides.FontsManager.if(Unknown Source)
at com.aspose.slides.Presentation.do(Unknown Source)
at com.aspose.slides.abk.do(Unknown Source)
at com.aspose.slides.MasterSlideCollection.do(Unknown Source)
at com.aspose.slides.MasterSlideCollection.addClone(Unknown Source)
at com.contiq.common.aspose.PPTXConverter.convert(PPTXConverter.java:54)
at com.contiq.common.aspose.Utils.toMasterPPTX(Utils.java:281)
at com.contiq.extractor.model.AsynchronousPPTXProcessor.process(AsynchronousPPTXProcessor.java:112)
at com.contiq.extractor.messaging.AsynchronousExtractDocumentPagesListener.handleExtractionMessage(AsynchronousExtractDocumentPagesListener.java:121)
at com.contiq.extractor.messaging.AsynchronousExtractDocumentPagesListener.lambda$extractDocumentPages$0(AsynchronousExtractDocumentPagesListener.java:80)
at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1590)
at java.util.concurrent.CompletableFuture$AsyncSupply.exec(CompletableFuture.java:1582)
at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
Caused by: com.aspose.slides.internal.m.gk: incorrect DeltaFormat = 32768 for device table
at com.aspose.slides.internal.m.f0.do(Unknown Source)
at com.aspose.slides.internal.m.fh.do(Unknown Source)
at com.aspose.slides.internal.m.i2.do(Unknown Source)
at com.aspose.slides.internal.m.fh.do(Unknown Source)
at com.aspose.slides.internal.m.g1.do(Unknown Source)
at com.aspose.slides.internal.m.h0.do(Unknown Source)
at com.aspose.slides.internal.m.g6.do(Unknown Source)
at com.aspose.slides.internal.m.h0.do(Unknown Source)
at com.aspose.slides.internal.m.h6.do(Unknown Source)
at com.aspose.slides.internal.m.fh.do(Unknown Source)
at com.aspose.slides.internal.m.g8.do(Unknown Source)
at com.aspose.slides.internal.m.g7.do(Unknown Source)
… 19 common frames omitted