It's hard to debug without seeing the test that is failing.

package com.teamtreehouse;

public class Main {

   public static void main(String[] args) {
      Prompter prompter = new Prompter();
      String story = "Thanks __name__ for helping me out.  You are really a __adjective__ __noun__ and I owe you a __noun__.";
      Template tmpl = new Template(story);
      prompter.run(tmpl);
   }
}

package com.teamtreehouse;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;


public class Prompter {
   private BufferedReader mReader;
   private Set<String> mCensoredWords;

   public Prompter() {
      mReader = new BufferedReader(new InputStreamReader(System.in));
      loadCensoredWords();
   }

   private void loadCensoredWords() {
      mCensoredWords = new HashSet<String>();
      Path file = Paths.get("resources", "censored_words.txt");
      List<String> words = null;
      try {
         words = Files.readAllLines(file);
      } catch (IOException e) {
         System.out.println("Couldn't load censored words");
         e.printStackTrace();
      }
      mCensoredWords.addAll(words);
   }

   public void run(Template tmpl) {
      List<String> results = null;
      try {
         results = promptForWords(tmpl);
         System.out.printf("Your TreeStory:%n%n%s", tmpl.render(results));
      } catch (IOException e) {
         System.out.println("There was a problem prompting for words");
         e.printStackTrace();
         System.exit(0);
      }
   }

   /**
    * Prompts user for each of the blanks
    *
    * @param tmpl The compiled template
    * @return
    * @throws IOException
    */
   public List<String> promptForWords(Template tmpl) throws IOException {
      List<String> words = new ArrayList<>();
      for (String phrase : tmpl.getPlaceHolders()) {
         String word = promptForWord(phrase);
         words.add(word);
      }
      return words;
   }

   /**
    * Prompts the user for the answer to the fill in the blank.  Value is guaranteed to be not in the censored words list.
    *
    * @param phrase The word that the user should be prompted.  eg: adjective, proper noun, name
    * @return What the user responded
    */
   public String promptForWord(String phrase) throws IOException {
      System.out.printf("Can you give me a %s? %n", phrase);
      String choice = mReader.readLine();
      if (mCensoredWords.contains(choice)) {
         System.out.printf("That's a censored word, try again.%n");
         choice = promptForWord(phrase);
      }
      else if (choice.isEmpty()) {
         System.out.printf("try again.%n");
         choice = promptForWord(phrase);
      }
      return choice;
   }
}