Program: 47643
Project: 47643
Buggy source:
public static void editSubscription(final String subscriptionName,final IPentahoSession session,final SimpleUrlFactory urlFactory,final OutputStream outputStream){
  ISubscriptionRepository subscriptionRepository=PentahoSystem.get(ISubscriptionRepository.class,session);
  ISubscription subscription=subscriptionRepository.getSubscription(subscriptionName,session);
  if (subscription == null) {
    return;
  }
  ISubscribeContent content=subscription.getContent();
  Map contentParameters=content.getParameters();
  SimpleParameterSetter parameters=new SimpleParameterSetter();
  parameters.setParameters(contentParameters);
  SubscriptionHelper.getSubscriptionParameters(subscriptionName,parameters,session);
  ISystemSettings systemSettings=PentahoSystem.getSystemSettings();
  String defaultParameterXsl=systemSettings.getSystemSetting("String_Node_Str","String_Node_Str");
  ISolutionEngine solutionEngine=(ISolutionEngine)PentahoSystem.get(ISolutionEngine.class,session);
  solutionEngine.setLoggingLevel(PentahoSystem.loggingLevel);
  solutionEngine.init(session);
  solutionEngine.setParameterXsl(defaultParameterXsl);
  solutionEngine.setForcePrompt(true);
  Map parameterProviderMap=new HashMap();
  parameterProviderMap.put("String_Node_Str",parameters);
  PentahoSessionParameterProvider sessionParameters=new PentahoSessionParameterProvider(session);
  parameterProviderMap.put(IParameterProvider.SCOPE_SESSION,sessionParameters);
  SimpleOutputHandler outputHandler=null;
  if (outputStream != null) {
    outputHandler=new SimpleOutputHandler(outputStream,true);
  }
  outputHandler.setOutputPreference(IOutputHandler.OUTPUT_TYPE_PARAMETERS);
  ArrayList messages=new ArrayList();
  IRuntimeContext runtime=null;
  String instanceId=null;
  boolean persisted=false;
  ActionInfo contentInfo=ActionInfo.parseActionString(content.getActionReference());
  try {
    runtime=solutionEngine.execute(contentInfo.getSolutionName(),contentInfo.getPath(),contentInfo.getActionName(),"String_Node_Str",false,true,instanceId,persisted,parameterProviderMap,outputHandler,null,urlFactory,messages);
  }
  finally {
    runtime.dispose();
  }
}

Fixed version (ground truth):
public static void editSubscription(final String subscriptionName,final IPentahoSession session,final SimpleUrlFactory urlFactory,final OutputStream outputStream){
  ISubscriptionRepository subscriptionRepository=PentahoSystem.get(ISubscriptionRepository.class,session);
  ISubscription subscription=subscriptionRepository.getSubscription(subscriptionName,session);
  if (subscription == null) {
    return;
  }
  ISubscribeContent content=subscription.getContent();
  Map contentParameters=content.getParameters();
  SimpleParameterSetter parameters=new SimpleParameterSetter();
  parameters.setParameters(contentParameters);
  SubscriptionHelper.getSubscriptionParameters(subscriptionName,parameters,session);
  ISystemSettings systemSettings=PentahoSystem.getSystemSettings();
  String defaultParameterXsl=systemSettings.getSystemSetting("String_Node_Str","String_Node_Str");
  ISolutionEngine solutionEngine=(ISolutionEngine)PentahoSystem.get(ISolutionEngine.class,session);
  solutionEngine.setLoggingLevel(PentahoSystem.loggingLevel);
  solutionEngine.init(session);
  solutionEngine.setParameterXsl(defaultParameterXsl);
  solutionEngine.setForcePrompt(true);
  Map parameterProviderMap=new HashMap();
  parameterProviderMap.put("String_Node_Str",parameters);
  PentahoSessionParameterProvider sessionParameters=new PentahoSessionParameterProvider(session);
  parameterProviderMap.put(IParameterProvider.SCOPE_SESSION,sessionParameters);
  SimpleOutputHandler outputHandler=null;
  if (outputStream != null) {
    outputHandler=new SimpleOutputHandler(outputStream,true);
  }
  outputHandler.setOutputPreference(IOutputHandler.OUTPUT_TYPE_PARAMETERS);
  ArrayList messages=new ArrayList();
  IRuntimeContext runtime=null;
  String instanceId=null;
  boolean persisted=false;
  try {
    runtime=solutionEngine.execute(content.getActionReference(),"String_Node_Str",false,true,instanceId,persisted,parameterProviderMap,outputHandler,null,urlFactory,messages);
  }
  finally {
    runtime.dispose();
  }
}