java.lang.NoClassDefFoundError: org/netbeans/modules/scala/sbt/project/SBTProjectOpenedHook
   at org.netbeans.modules.scala.sbt.project.SBTProject.lookup$lzycompute(SBTProject.java:32)
   at org.netbeans.modules.scala.sbt.project.SBTProject.lookup(SBTProject.java:25)
   at org.netbeans.modules.scala.sbt.project.SBTProject.getLookup(SBTProject.java:40)
   at org.netbeans.modules.projectapi.nb.NbProjectInformationProvider.getProjectInformation(NbProjectInformationProvider.java:75)
   at org.netbeans.api.project.ProjectUtils.getInformation(ProjectUtils.java:96)
   at org.netbeans.modules.project.ui.ProjectUtilities$2.run(ProjectUtilities.java:263)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:749)
   at java.awt.EventQueue.access$500(EventQueue.java:97)
   at java.awt.EventQueue$3.run(EventQueue.java:702)
   at java.awt.EventQueue$3.run(EventQueue.java:696)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:719)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)