java.lang.ClassNotFoundException: org.netbeans.modules.hudson.spi.ProjectHudsonProvider
   at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
   at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
Caused: java.lang.ClassNotFoundException: org.netbeans.modules.hudson.spi.ProjectHudsonProvider starting from ModuleCL@172e08e[org.netbeans.modules.hudson.kenai] with possible defining loaders [ModuleCL@96b1b8[org.netbeans.modules.hudson]] and declared parents [ModuleCL@1df5c7[org.netbeans.modules.kenai], ModuleCL@16535bf[org.netbeans.modules.kenai.ui], ModuleCL@96b1b8[org.netbeans.modules.hudson], org.netbeans.MainImpl$BootClassLoader@1113708, ModuleCL@12e5ce6[org.netbeans.modules.projectapi]]
   at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:264)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
   at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
Caused: java.lang.NoClassDefFoundError: org/netbeans/modules/hudson/spi/ProjectHudsonProvider
   at java.lang.ClassLoader.defineClass1(ClassLoader.java:0)
   at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
   at org.netbeans.JarClassLoader.doLoadClass(JarClassLoader.java:274)
Caused: java.lang.NoClassDefFoundError: org/netbeans/modules/hudson/spi/ProjectHudsonProvider while loading org.netbeans.modules.hudson.kenai.KenaiHudsonBuildAssociation; see http://wiki.netbeans.org/DevFaqTroubleshootClassNotFound
   at org.netbeans.ProxyClassLoader.selfLoadClass(ProxyClassLoader.java:304)
   at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:227)
   at org.netbeans.ModuleManager$SystemClassLoader.loadClass(ModuleManager.java:711)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
   at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
   at java.lang.Class.forName0(Class.java:0)
   at java.lang.Class.forName(Class.java:247)
Caused: java.lang.ClassNotFoundException: org/netbeans/modules/hudson/spi/ProjectHudsonProvider while loading org.netbeans.modules.hudson.kenai.KenaiHudsonBuildAssociation; see http://wiki.netbeans.org/DevFaqTroubleshootClassNotFound
   at org.openide.util.lookup.MetaInfServicesLookup.search(MetaInfServicesLookup.java:329)
   at org.openide.util.lookup.MetaInfServicesLookup.beforeLookup(MetaInfServicesLookup.java:159)
   at org.openide.util.lookup.MetaInfServicesLookup.beforeLookupResult(MetaInfServicesLookup.java:138)
   at org.openide.util.lookup.AbstractLookup.lookup(AbstractLookup.java:482)
   at org.openide.util.lookup.ProxyLookup$R.initResults(ProxyLookup.java:384)
   at org.openide.util.lookup.ProxyLookup$R.myBeforeLookup(ProxyLookup.java:649)
   at org.openide.util.lookup.ProxyLookup$R.computeResult(ProxyLookup.java:543)
   at org.openide.util.lookup.ProxyLookup$R.allInstances(ProxyLookup.java:503)
   at org.openide.util.lookup.ProxyLookup$R.allInstances(ProxyLookup.java:499)
   at org.openide.util.Lookup.lookupAll(Lookup.java:263)
   at org.netbeans.modules.hudson.spi.ProjectHudsonProvider$1.findAssociation(ProjectHudsonProvider.java:76)
   at org.netbeans.modules.hudson.impl.HudsonManagerImpl.checkOpenProjects(HudsonManagerImpl.java:270)
   at org.netbeans.modules.hudson.impl.HudsonManagerImpl.access$000(HudsonManagerImpl.java:74)
   at org.netbeans.modules.hudson.impl.HudsonManagerImpl$4.run(HudsonManagerImpl.java:251)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1452)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2032)