Program: 93907
Project: 93907
Buggy source:
private void createAndPublishUserRegion() throws BundleException {
  ImmutableRegion kernelRegion=new ImmutableRegion(REGION_KERNEL,this.bundleContext,new RegionPackageImportPolicy(){
    @Override public boolean isImported(    Region providerRegion,    String packageName,    Map<String,Object> attributes,    Map<String,String> directives){
      return providerRegion == null || this.equals(providerRegion);
    }
  }
);
  registerRegionService(kernelRegion);
  StandardRegionMembership regionMembership=new StandardRegionMembership(this.bundleContext.getBundle(),kernelRegion);
  registerRegionMembership(regionMembership,this.bundleContext);
  registerResolverHookFactory(new RegionResolverHookFactory(regionMembership));
  registerBundleEventHook(new RegionBundleEventHook(regionMembership));
  registerBundleFindHook(new RegionBundleFindHook(regionMembership));
  registerServiceEventHook(new RegionServiceEventHook(regionMembership,this.regionServiceImports,this.regionServiceExports));
  registerServiceFindHook(new RegionServiceFindHook(regionMembership,this.regionServiceImports,this.regionServiceExports));
}

Fixed version (ground truth):
private void createAndPublishUserRegion() throws BundleException {
  ImmutableRegion kernelRegion=new ImmutableRegion(REGION_KERNEL,this.bundleContext,new RegionPackageImportPolicy(){
    @Override public boolean isImported(    String packageName,    Map<String,Object> attributes,    Map<String,String> directives){
      return false;
    }
    @Override public Region getUserRegion(){
      return new Region(){
        @Override public void addBundle(        Bundle bundle) throws BundleException {
        }
        @Override public void connectRegion(        Region tailRegion,        RegionFilter filter) throws BundleException {
        }
        @Override public boolean contains(        Bundle bundle){
          return false;
        }
        @Override public Bundle getBundle(        String symbolicName,        Version version){
          return null;
        }
        @Override public BundleContext getBundleContext(){
          return null;
        }
        @Override public String getName(){
          return null;
        }
        @Override public RegionPackageImportPolicy getRegionPackageImportPolicy(){
          return null;
        }
        @Override public Bundle installBundle(        String location,        InputStream input) throws BundleException {
          return null;
        }
        @Override public Bundle installBundle(        String location) throws BundleException {
          return null;
        }
      }
;
    }
  }
);
  registerRegionService(kernelRegion);
  StandardRegionMembership regionMembership=new StandardRegionMembership(this.bundleContext.getBundle(),kernelRegion);
  registerRegionMembership(regionMembership,this.bundleContext);
  registerResolverHookFactory(new RegionResolverHookFactory(regionMembership));
  registerBundleEventHook(new RegionBundleEventHook(regionMembership));
  registerBundleFindHook(new RegionBundleFindHook(regionMembership));
  registerServiceEventHook(new RegionServiceEventHook(regionMembership,this.regionServiceImports,this.regionServiceExports));
  registerServiceFindHook(new RegionServiceFindHook(regionMembership,this.regionServiceImports,this.regionServiceExports));
}