diff --git a/src/de/sockenklaus/XmlStats/XmlWorkers/AchievementsList.java b/src/de/sockenklaus/XmlStats/XmlWorkers/AchievementsList.java
index 0b305cc..1c811d3 100644
--- a/src/de/sockenklaus/XmlStats/XmlWorkers/AchievementsList.java
+++ b/src/de/sockenklaus/XmlStats/XmlWorkers/AchievementsList.java
@@ -27,7 +27,8 @@ public class AchievementsList extends XmlWorker {
 		HashMap<String, AchievementListData> achList = new AchievementsDS().getAchievementsList();
 
 		Element elem_achs = this.doc.createElement("achievements");
-				
+		elem_achs.setAttribute("count", String.valueOf(achList.size()));	
+		
 		for(String achName : achList.keySet()){
 			elem_achs.appendChild(getAchievement(achList.get(achName)));
 		}
diff --git a/src/de/sockenklaus/XmlStats/XmlWorkers/UserAchievements.java b/src/de/sockenklaus/XmlStats/XmlWorkers/UserAchievements.java
index f0fc040..3cde291 100644
--- a/src/de/sockenklaus/XmlStats/XmlWorkers/UserAchievements.java
+++ b/src/de/sockenklaus/XmlStats/XmlWorkers/UserAchievements.java
@@ -11,6 +11,7 @@ import org.w3c.dom.Element;
 import com.nidefawl.Achievements.PlayerAchievement;
 
 import de.sockenklaus.XmlStats.Datasource.AchievementsDS;
+import de.sockenklaus.XmlStats.Exceptions.XmlStatsException;
 
 /**
  * @author socrates
@@ -28,12 +29,8 @@ public class UserAchievements extends XmlWorker {
 	 * @see de.sockenklaus.XmlStats.XmlWorkers.XmlWorker#getXML(java.util.Map)
 	 */
 	@Override
-	protected Element getXml(Map<String, List<String>> parameters) {
-		Element elem_error = this.doc.createElement("error");
-		elem_error.setAttribute("code", "1");
-		elem_error.setTextContent("No data provided with this query!");
-		
-		return elem_error;
+	protected Element getXml(Map<String, List<String>> parameters) throws XmlStatsException {
+		throw new XmlStatsException("No data provided with this query!");
 	}
 	
 	private Element getUserAchievement(String userName){
@@ -43,6 +40,7 @@ public class UserAchievements extends XmlWorker {
 		PlayerAchievement pa = achDS.getUserAchievement(userName);
 		
 		Element elem_achs = this.doc.createElement("achievements");
+		elem_achs.setAttribute("count", String.valueOf(pa.achievements.size()));
 		
 		for(String achName : pa.achievements.keySet()){
 			Element elem_ach = this.doc.createElement("achievement");
@@ -60,17 +58,8 @@ public class UserAchievements extends XmlWorker {
 	 * @see de.sockenklaus.XmlStats.XmlWorkers.XmlWorker#getSumXml(java.util.List, java.util.Map)
 	 */
 	@Override
-	protected Element getSumXml(List<String> playerList, Map<String, List<String>> parameters) {
-		if(parameters.containsKey("user")){
-			return null;
-		}
-		else {
-			Element elem_error = this.doc.createElement("error");
-			elem_error.setAttribute("code", "1");
-			elem_error.setTextContent("No data provided with this query!");
-			
-			return elem_error;
-		}
+	protected Element getSumXml(List<String> playerList, Map<String, List<String>> parameters) throws XmlStatsException {
+		throw new XmlStatsException("sum="+parameters.get("sum")+" does not deliver any data!");
 	}
 
 	/* (non-Javadoc)
diff --git a/src/de/sockenklaus/XmlStats/XmlWorkers/UserBalances.java b/src/de/sockenklaus/XmlStats/XmlWorkers/UserBalances.java
index 6d237a1..7ae2a9a 100644
--- a/src/de/sockenklaus/XmlStats/XmlWorkers/UserBalances.java
+++ b/src/de/sockenklaus/XmlStats/XmlWorkers/UserBalances.java
@@ -58,11 +58,6 @@ public class UserBalances extends XmlWorker {
 	 */
 	@Override
 	public Element getXml(Map<String, List<String>> parameters) throws XmlStatsException {
-		/*Element elem_error = this.doc.createElement("error");
-		elem_error.setAttribute("code", "1");
-		elem_error.setTextContent("No data provided with this query!");
-		
-		return elem_error;*/
 		throw new XmlStatsException("No data provided with this query!");
 	}
 
diff --git a/src/de/sockenklaus/XmlStats/XmlWorkers/UserStats.java b/src/de/sockenklaus/XmlStats/XmlWorkers/UserStats.java
index 4d88264..4b94b5d 100644
--- a/src/de/sockenklaus/XmlStats/XmlWorkers/UserStats.java
+++ b/src/de/sockenklaus/XmlStats/XmlWorkers/UserStats.java
@@ -27,6 +27,7 @@ import com.nidefawl.Stats.datasource.Category;
 import com.nidefawl.Stats.datasource.PlayerStat;
 
 import de.sockenklaus.XmlStats.Datasource.UserstatsDS;
+import de.sockenklaus.XmlStats.Exceptions.XmlStatsException;
 
 // TODO: Auto-generated Javadoc
 /**
@@ -51,12 +52,8 @@ public class UserStats extends XmlWorker {
 	/* (non-Javadoc)
 	 * @see de.sockenklaus.XmlStats.XmlWorkers.XmlWorker#getXML(java.util.Map)
 	 */
-	public Element getXml(Map<String, List<String>> parameters) {
-		Element elem_error = this.doc.createElement("error");
-		elem_error.setAttribute("code", "1");
-		elem_error.setTextContent("No data provided with this query!");
-		
-		return elem_error;
+	public Element getXml(Map<String, List<String>> parameters) throws XmlStatsException {
+		throw new XmlStatsException("No data provided with this query!");
 	}
 	
 	/**
@@ -71,6 +68,7 @@ public class UserStats extends XmlWorker {
 		
 		Element elem_player = this.doc.createElement("user");
 		Element elem_cats = this.doc.createElement("categories");
+		elem_cats.setAttribute("count", String.valueOf(player_stats.getCats().size()));
 	
 		elem_player.appendChild(getTextElem("name", playerName));
 		elem_player.appendChild(elem_cats);
@@ -79,6 +77,7 @@ public class UserStats extends XmlWorker {
 			Category cat = player_stats.get(catName);
 			Element elem_cat = this.doc.createElement("category");
 			Element elem_items = this.doc.createElement("items");
+			elem_items.setAttribute("count", String.valueOf(cat.stats.size()));
 			
 			elem_cat.appendChild(getTextElem("name", catName));
 			elem_cat.appendChild(elem_items);
@@ -106,12 +105,14 @@ public class UserStats extends XmlWorker {
 		HashMap<String, HashMap<String, Integer>> addedStats = statsDS.getAddedStats(playerList);
 		Element elem_stats = this.doc.createElement("stats");
 		Element elem_cats = this.doc.createElement("categories");
+		elem_cats.setAttribute("count", String.valueOf(addedStats.size()));
 		
 		elem_stats.appendChild(elem_cats);
 		
 		for (String catName : addedStats.keySet()){
 			Element elem_cat = this.doc.createElement("category");
 			Element elem_items = this.doc.createElement("items");
+			elem_items.setAttribute("count", String.valueOf(addedStats.get(catName).size()));
 			
 			elem_cat.appendChild(getTextElem("name", catName));
 			elem_cat.appendChild(elem_items);