Program: 10759
Project: 10759
Buggy source:
protected void internalDeleteModules(final IModule[] modules,final boolean deleteServices,IProgressMonitor monitor) throws CoreException {
  final CloudFoundryServer cloudServer=getCloudFoundryServer();
  new Request<Void>(){
    @Override protected Void doRun(    CloudFoundryOperations client,    SubMonitor progress) throws CoreException {
      for (      IModule module : modules) {
        final CloudFoundryApplicationModule appModule=cloudServer.getExistingCloudModule(module);
        List<String> servicesToDelete=new ArrayList<String>();
        CloudApplication application=client.getApplication(appModule.getDeployedApplicationName());
        List<String> actualServices=application.getServices();
        if (actualServices != null) {
          for (          String serviceName : actualServices) {
            if (serviceName != null) {
              servicesToDelete.add(serviceName);
            }
          }
        }
        if (TunnelBehaviour.isCaldecottApp(appModule.getDeployedApplicationName())) {
          new TunnelBehaviour(cloudServer).stopAndDeleteAllTunnels(progress);
        }
        client.deleteApplication(appModule.getDeployedApplicationName());
        cloudServer.removeApplication(appModule);
        appModule.setCloudApplication(null);
        if (deleteServices && !servicesToDelete.isEmpty()) {
          CloudFoundryPlugin.getCallback().deleteServices(servicesToDelete,cloudServer);
          ServerEventHandler.getDefault().fireServicesUpdated(cloudServer);
        }
      }
      return null;
    }
  }
.run(monitor);
}

Fixed version (ground truth):
protected void internalDeleteModules(final IModule[] modules,final boolean deleteServices,IProgressMonitor monitor) throws CoreException {
  final CloudFoundryServer cloudServer=getCloudFoundryServer();
  new Request<Void>(){
    @Override protected Void doRun(    CloudFoundryOperations client,    SubMonitor progress) throws CoreException {
      for (      IModule module : modules) {
        final CloudFoundryApplicationModule appModule=cloudServer.getExistingCloudModule(module);
        if (appModule == null) {
          CloudFoundryPlugin.logWarning("String_Node_Str" + module.getName());
          continue;
        }
        List<String> servicesToDelete=new ArrayList<String>();
        CloudApplication application=client.getApplication(appModule.getDeployedApplicationName());
        List<String> actualServices=application.getServices();
        if (actualServices != null) {
          for (          String serviceName : actualServices) {
            if (serviceName != null) {
              servicesToDelete.add(serviceName);
            }
          }
        }
        if (TunnelBehaviour.isCaldecottApp(appModule.getDeployedApplicationName())) {
          new TunnelBehaviour(cloudServer).stopAndDeleteAllTunnels(progress);
        }
        client.deleteApplication(appModule.getDeployedApplicationName());
        cloudServer.removeApplication(appModule);
        appModule.setCloudApplication(null);
        if (deleteServices && !servicesToDelete.isEmpty()) {
          CloudFoundryPlugin.getCallback().deleteServices(servicesToDelete,cloudServer);
          ServerEventHandler.getDefault().fireServicesUpdated(cloudServer);
        }
      }
      return null;
    }
  }
.run(monitor);
}