java.lang.NullPointerException
   at org.openide.filesystems.FileUtil.toFile(FileUtil.java:829)
   at org.netbeans.api.ruby.platform.RubyPlatform$Info.forDefaultPlatform(RubyPlatform.java:1153)
   at org.netbeans.api.ruby.platform.RubyPlatformManager.findDefaultPlatform(RubyPlatformManager.java:203)
   at org.netbeans.api.ruby.platform.RubyPlatformManager.getPlatformsInternal(RubyPlatformManager.java:322)
   at org.netbeans.api.ruby.platform.RubyPlatformManager.getPlatformByID(RubyPlatformManager.java:357)
   at org.netbeans.api.ruby.platform.RubyPlatformProvider.getPlatform(RubyPlatformProvider.java:106)
   at org.netbeans.api.ruby.platform.RubyPlatformProvider.getPlatform(RubyPlatformProvider.java:101)
   at org.netbeans.modules.ruby.rubyproject.classpath.BootClassPathImplementation.getResources(BootClassPathImplementation.java:148)
   at org.netbeans.api.java.classpath.ClassPath.entries(ClassPath.java:350)
   at org.netbeans.api.java.classpath.ClassPath.toString(ClassPath.java:689)
   at org.netbeans.api.java.classpath.ClassPath.toString(ClassPath.java:725)
   at org.netbeans.modules.parsing.impl.indexing.LogContext.addPaths(LogContext.java:906)
   at org.netbeans.modules.parsing.impl.indexing.PathRegistry.scheduleFirer(PathRegistry.java:911)
   at org.netbeans.modules.parsing.impl.indexing.PathRegistry.resetCacheAndFire(PathRegistry.java:899)
   at org.netbeans.modules.parsing.impl.indexing.PathRegistry.access$500(PathRegistry.java:90)
   at org.netbeans.modules.parsing.impl.indexing.PathRegistry$Listener.pathsAdded(PathRegistry.java:1164)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:0)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:606)
   at org.openide.util.WeakListenerImpl$ProxyListener.invoke(WeakListenerImpl.java:461)
   at com.sun.proxy.$Proxy5.pathsAdded(.java:0)
   at org.netbeans.api.java.classpath.GlobalPathRegistry.register(GlobalPathRegistry.java:214)
   at org.netbeans.modules.ruby.rubyproject.RubyProject.registerClassPath(RubyProject.java:144)
   at org.netbeans.modules.ruby.rubyproject.RubyBaseProject.open(RubyBaseProject.java:295)
   at org.netbeans.modules.ruby.rubyproject.RubyBaseProject$ProjectOpenedHookImpl.projectOpened(RubyBaseProject.java:411)
   at org.netbeans.spi.project.ui.ProjectOpenedHook$1.projectOpened(ProjectOpenedHook.java:85)
   at org.netbeans.modules.project.ui.OpenProjectList.notifyOpened(OpenProjectList.java:1298)
   at org.netbeans.modules.project.ui.OpenProjectList.access$1600(OpenProjectList.java:137)
   at org.netbeans.modules.project.ui.OpenProjectList$LoadOpenProjects.loadOnBackground(OpenProjectList.java:516)
   at org.netbeans.modules.project.ui.OpenProjectList$LoadOpenProjects.run(OpenProjectList.java:394)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1423)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)