This problem was reported previously, but not tagged “Problem Report”, see here:
The error message I get, when opening unzipped SAFE data containing S3-SYN via the manifest file with snap-v8 (current as of today) is:
java.lang.RuntimeException: Waiting thread received a null tile. at com.sun.media.jai.util.SunTileScheduler.scheduleTile(Unknown Source) at javax.media.jai.OpImage.getTile(Unknown Source) at javax.media.jai.RenderedOp.getTile(Unknown Source) at org.esa.snap.core.datamodel.StxFactory.accumulateTile(StxFactory.java:351) at org.esa.snap.core.datamodel.StxFactory.accumulate(StxFactory.java:335) at org.esa.snap.core.datamodel.StxFactory.accumulate(StxFactory.java:297) at org.esa.snap.core.datamodel.StxFactory.create(StxFactory.java:201) at org.esa.snap.core.datamodel.StxFactory.create(StxFactory.java:275) at org.esa.snap.core.datamodel.RasterDataNode.computeStxImpl(RasterDataNode.java:2453) at org.esa.snap.core.datamodel.Band.computeStxImpl(Band.java:506) at org.esa.snap.core.datamodel.RasterDataNode.getStx(RasterDataNode.java:2420) at org.esa.snap.core.datamodel.RasterDataNode.getStx(RasterDataNode.java:2395) at org.esa.s3tbx.dataio.s3.AbstractProductFactory.addUncertaintyImageInfo(AbstractProductFactory.java:191) at org.esa.s3tbx.dataio.s3.AbstractProductFactory.setUncertaintyBands(AbstractProductFactory.java:181) at org.esa.s3tbx.dataio.s3.AbstractProductFactory.createProduct(AbstractProductFactory.java:104) at org.esa.s3tbx.dataio.s3.Sentinel3ProductReader.createProduct(Sentinel3ProductReader.java:101) at org.esa.s3tbx.dataio.s3.Sentinel3ProductReader.readProductNodesImpl(Sentinel3ProductReader.java:89) at org.esa.snap.core.dataio.AbstractProductReader.readProductNodes(AbstractProductReader.java:178) at org.esa.snap.core.dataio.ProductIO.readProduct(ProductIO.java:179) at org.esa.snap.rcp.actions.file.ReadProductOperation.run(ReadProductOperation.java:61) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443) at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68) at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303) [catch] at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)