Program: 30329
Project: 30329
Buggy source:
@Override public void execute(AdminCommandContext context){
  if (group == null) {
    context.getActionReport().failure(RuntimeContext.logger,"String_Node_Str");
    return;
  }
  ServerPool targetGroup=groups.byName(group);
  if (targetGroup == null) {
    context.getActionReport().failure(RuntimeContext.logger,"String_Node_Str" + group);
    return;
  }
  try {
    VirtualMachine vm=targetGroup.vmByName(virtualMachine);
    if (vm != null) {
      CountDownLatch latch=vmLifecycle.getStartupLatch(vm.getName());
      if (latch != null) {
        latch.countDown();
      }
      vm.setAddress(address);
      vm.setUser(new VMUser(sshUser,VMUser.ConnectionType.SSH));
      vm.setProperty(VirtualMachine.PropertyName.INSTALL_DIR,installDir);
      Cluster clusterConfig=domain.getClusterNamed(cluster);
      VirtualMachineConfig vmConfig=clusterConfig.getExtensionsByTypeAndName(VirtualMachineConfig.class,vm.getName());
      try {
        ConfigSupport.apply(new SingleConfigCode<VirtualMachineConfig>(){
          @Override public Object run(          VirtualMachineConfig wConfig) throws PropertyVetoException, TransactionFailure {
            Property wProperty=wConfig.createChild(Property.class);
            wProperty.setName(VirtualMachine.PropertyName.INSTALL_DIR.toString());
            wProperty.setValue(installDir);
            wConfig.getProperty().add(wProperty);
            return wProperty;
          }
        }
,vmConfig);
      }
 catch (      TransactionFailure transactionFailure) {
        RuntimeContext.logger.log(Level.SEVERE,"String_Node_Str",transactionFailure);
      }
      Template template=vmConfig.getTemplate();
      VirtualCluster virtualCluster=virtualClusters.byName(cluster);
      templateRepository.byName(template.getName()).getCustomizer().customize(virtualCluster,vm);
      templateRepository.byName(template.getName()).getCustomizer().start(vm);
    }
  }
 catch (  VirtException e) {
    RuntimeContext.logger.log(Level.SEVERE,e.getMessage(),e);
    context.getActionReport().failure(RuntimeContext.logger,e.getMessage());
  }
}

Fixed version (ground truth):
@Override public void execute(AdminCommandContext context){
  if (group == null) {
    context.getActionReport().failure(RuntimeContext.logger,"String_Node_Str");
    return;
  }
  ServerPool targetGroup=groups.byName(group);
  if (targetGroup == null) {
    context.getActionReport().failure(RuntimeContext.logger,"String_Node_Str" + group);
    return;
  }
  try {
    VirtualMachine vm=targetGroup.vmByName(virtualMachine);
    if (vm != null) {
      vm.setAddress(address);
      vm.setProperty(VirtualMachine.PropertyName.INSTALL_DIR,installDir);
      Cluster clusterConfig=domain.getClusterNamed(cluster);
      VirtualMachineConfig vmConfig=clusterConfig.getExtensionsByTypeAndName(VirtualMachineConfig.class,vm.getName());
      try {
        ConfigSupport.apply(new SingleConfigCode<VirtualMachineConfig>(){
          @Override public Object run(          VirtualMachineConfig wConfig) throws PropertyVetoException, TransactionFailure {
            Property wProperty=wConfig.createChild(Property.class);
            wProperty.setName(VirtualMachine.PropertyName.INSTALL_DIR.toString());
            wProperty.setValue(installDir);
            wConfig.getProperty().add(wProperty);
            return wProperty;
          }
        }
,vmConfig);
      }
 catch (      TransactionFailure transactionFailure) {
        RuntimeContext.logger.log(Level.SEVERE,"String_Node_Str",transactionFailure);
      }
      Template template=vmConfig.getTemplate();
      VirtualCluster virtualCluster=virtualClusters.byName(cluster);
      TemplateCustomizer customizer=templateRepository.byName(template.getName()).getCustomizer();
      if (customizer != null) {
        customizer.customize(virtualCluster,vm);
        customizer.start(vm);
      }
      CountDownLatch latch=vmLifecycle.getStartupLatch(vm.getName());
      if (latch != null) {
        latch.countDown();
      }
    }
  }
 catch (  VirtException e) {
    RuntimeContext.logger.log(Level.SEVERE,e.getMessage(),e);
    context.getActionReport().failure(RuntimeContext.logger,e.getMessage());
  }
}