FWIW, I have verified this bug on my machine - downgrading to 8.1+dfsg1-7 as suggested by Ben helped, making it work again. (Thanks, Ben!)
Here is the stack trace when running with 8.1+dfsg1-8. To me, this looks like code compiled for Java 9+ trying to run on Java 8 (which I am currently using) but there could of course also be other possible explanations. > java.lang.NoSuchMethodError: > java.nio.ByteBuffer.position(I)Ljava/nio/ByteBuffer; > at org.netbeans.core.startup.layers.BinaryFS.<init>(Unknown Source) > at org.netbeans.core.startup.layers.BinaryCacheManager.load(Unknown > Source) > at > org.netbeans.core.startup.layers.LayerCacheManager$1Updater.run(Unknown > Source) > at org.openide.filesystems.EventControl.runAtomicAction(Unknown > Source) > at org.openide.filesystems.FileSystem.runAtomicAction(Unknown Source) > at org.openide.filesystems.FileUtil.runAtomicAction(Unknown Source) > at org.netbeans.core.startup.layers.LayerCacheManager.store(Unknown > Source) > at > org.netbeans.core.startup.layers.ModuleLayeredFileSystem.setURLs(Unknown > Source) > at > org.netbeans.core.startup.layers.ModuleLayeredFileSystem.addURLs(Unknown > Source) > at org.netbeans.core.startup.NbInstaller.loadLayers(Unknown Source) > at org.netbeans.core.startup.NbInstaller.loadImpl(Unknown Source) > at org.netbeans.core.startup.NbInstaller.access$000(Unknown Source) > at org.netbeans.core.startup.NbInstaller$1.run(Unknown Source) > at org.openide.filesystems.FileUtil$2.run(Unknown Source) > at org.openide.filesystems.EventControl.runAtomicAction(Unknown > Source) > at org.openide.filesystems.FileSystem.runAtomicAction(Unknown Source) > at org.openide.filesystems.FileUtil.runAtomicAction(Unknown Source) > INFO [null]: Last record repeated again. > at org.netbeans.core.startup.NbInstaller.load(Unknown Source) > at org.netbeans.ModuleManager.enable(Unknown Source) > INFO [null]: Last record repeated again. > at org.netbeans.core.startup.ModuleList.installNew(Unknown Source) > at org.netbeans.core.startup.ModuleList.trigger(Unknown Source) > at org.netbeans.core.startup.ModuleSystem.restore(Unknown Source) > at org.netbeans.core.startup.Main.getModuleSystem(Unknown Source) > INFO [null]: Last record repeated again. > at org.netbeans.core.startup.Main.start(Unknown Source) > at org.netbeans.core.startup.TopThreadGroup.run(Unknown Source) > at java.lang.Thread.run(Thread.java:748)
