diff --git a/context.xml b/context.xml
index 17ef068..00e6566 100644
--- a/context.xml
+++ b/context.xml
@@ -1,14 +1,14 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<contexts>
-   
-   
-   <context id="adapter_mongodb" title="MongoDB Data Adapter">
-      <description>MongoDB is an open source document-oriented database system developed and supported by 10gen. It is part of the NoSQL family of database systems. Instead of storing data in tables as is done in a &quot;classical&quot; relational database, MongoDB stores structured data as JSON-like documents with dynamic schemas (MongoDB calls the format BSON), making the integration of data in certain types of applications easier and faster.</description>
-      <topic href="html/mongodb.html" label="MongoDB Data Adapter"/>
-   </context>
-   <context id="query_mongo" title="Dataset and query dialog">
-      <description>From this dialog you can change the dataset query, define new parameters or change the adapter used to retrive the data.</description>
-      <topic href="http://docs.mongodb.org/manual/" label="The MongoDB Manual"/>
-      <topic href="http://docs.mongodb.org/manual/core/read-operations/" label="Read Operations Reference"/>
+<?xml version="1.0" encoding="UTF-8"?>
+<contexts>
+   
+   
+   <context id="adapter_mongodb" title="MongoDB Data Adapter">
+      <description>MongoDB is an open source document-oriented database system developed and supported by 10gen. It is part of the NoSQL family of database systems. Instead of storing data in tables as is done in a &quot;classical&quot; relational database, MongoDB stores structured data as JSON-like documents with dynamic schemas (MongoDB calls the format BSON), making the integration of data in certain types of applications easier and faster.</description>
+      <topic href="html/mongodb.html" label="MongoDB Data Adapter"/>
    </context>
-</contexts>
+   <context id="query_mongo" title="Dataset and query dialog">
+      <description>From this dialog you can change the dataset query, define new parameters or change the adapter used to retrive the data.</description>
+      <topic href="http://docs.mongodb.org/manual/" label="The MongoDB Manual"/>
+      <topic href="http://docs.mongodb.org/manual/core/read-operations/" label="Read Operations Reference"/>
+   </context>
+</contexts>
diff --git a/pom.xml b/pom.xml
index d186c1a..b20f4eb 100644
--- a/pom.xml
+++ b/pom.xml
@@ -13,7 +13,7 @@
 	<artifactId>com.jaspersoft.studio.data.mongodb</artifactId>
 	<!--packaging>eclipse-plugin</packaging-->
 	<packaging>jar</packaging>
-	<version>5.1.0.soluvas1</version>
+	<version>5.1.1-SNAPSHOT</version>
 	
 	<dependencies>
 		<dependency>
diff --git a/src/com/jaspersoft/mongodb/connection/MongoDbConnection.java b/src/com/jaspersoft/mongodb/connection/MongoDbConnection.java
index 6bfa777..ba427ac 100644
--- a/src/com/jaspersoft/mongodb/connection/MongoDbConnection.java
+++ b/src/com/jaspersoft/mongodb/connection/MongoDbConnection.java
@@ -31,9 +31,10 @@
 import java.sql.Statement;
 import java.sql.Struct;
 import java.util.Arrays;
-import java.util.List;
+import java.util.HashSet;
 import java.util.Map;
 import java.util.Properties;
+import java.util.Set;
 import java.util.concurrent.Executor;
 
 import net.sf.jasperreports.engine.JRException;
@@ -66,11 +67,12 @@ public class MongoDbConnection implements Connection {
 
 	private static final Logger logger = LoggerFactory.getLogger(MongoDbConnection.class);
 
-	protected static final List<Integer> AUTH_ERROR_CODES = Arrays.asList(new Integer[] {
+	protected static final Set<Integer> AUTH_ERROR_CODES = new HashSet<Integer>(Arrays.asList(new Integer[] {
 			16550, // not authorized for query on foo.system.namespaces
 			10057, // unauthorized db:admin ns:admin.system.users lock type:1 client:127.0.0.1
-			15845 // unauthorized
-	});
+			15845, // unauthorized
+			13    // MongoDB 2.6.0: not authorized on DB to execute command { count: \"system.namespaces\", query: {}, fields: {} }
+	}));
 	
 	public MongoDbConnection(String mongoURI, String username, String password)
 			throws JRException {
@@ -86,7 +88,7 @@ private void create(String mongoURI) throws JRException {
 			client = new Mongo(mongoURIObject = new MongoURI(mongoURI));
 		} catch (Exception e) {
 			logger.error("Cannot create connection", e);
-			throw new JRException(e.getMessage());
+			throw new JRException(e.getMessage(), e);
 		}
 	}
 
@@ -105,15 +107,16 @@ private void setDatabase() throws JRException {
 		} catch (Exception e) {
 			String message = e.getMessage();
 			if (e instanceof MongoException) {
-				if (AUTH_ERROR_CODES.contains(((MongoException) e).getCode())) {
+				final MongoException mongoE = (MongoException) e;
+				if (AUTH_ERROR_CODES.contains(mongoE.getCode())) {
 					performaAuthentication = true;
 				} else {
-					logger.error("Cannot set database", e);
-					throw new JRException(message);
+					logger.error("Cannot set database. Code " + mongoE.getCode() + ": " + mongoE, mongoE);
+					throw new JRException("Error " + mongoE.getCode() + ": " + mongoE, mongoE);
 				}
 			} else {
-				logger.error("Cannot set database", e);
-				throw new JRException(message);
+				logger.error("Cannot set database: " + e, e);
+				throw new JRException(message, e);
 			}
 		}
 		if (performaAuthentication) {