diff --git a/SWADroid/res/values-es/strings.xml b/SWADroid/res/values-es/strings.xml
index 74178059..7523acd9 100644
--- a/SWADroid/res/values-es/strings.xml
+++ b/SWADroid/res/values-es/strings.xml
@@ -28,6 +28,8 @@
 	<string name="coursesProgressDescription">Obteniendo asignaturas...</string>
 	<string name="notificationsProgressTitle">Notificaciones</string>
 	<string name="notificationsProgressDescription">Obteniendo nuevas notificaciones</string>
+	<string name="testsDownloadProgressTitle">Tests</string>
+	<string name="testsDownloadProgressDescription">Obteniendo preguntas de test...</string>
 	<string name="errorMsgWorkaroundEmulator">Mierda. Ese bug del emulador de Android ha vuelto a
 		aparecer. Reintentando...</string>
 	<string name="errorMsgLaunchingActivity">Ha ocurrido un error durante la ejecución de la
@@ -50,6 +52,11 @@
 	<string name="noContentMsg">Sin contenido</string>
 	<string name="yesMsg">Sí</string>
 	<string name="noMsg">No</string>
+	<string name="acceptMsg">Aceptar</string>
+	<string name="cancelMsg">Cancelar</string>
+	<string name="selectCourseTitle">Seleccione asignatura</string>
+	<string name="noCourseSelectedMsg">Debe seleccionar una asignatura para descargar los tests</string>
+	<string name="forbiddenCourseTestsDownloadMsg">El profesor de esta asignatura no permite la descarga de tests</string>
 	<string name="firstRunMsg">Antes de usar la aplicación por primera vez debe
 		introducir el nombre de usuario y la contraseña de acceso a SWAD en la
 		pantalla de configuración.\n\nPuede acceder a la pantalla de
@@ -59,11 +66,9 @@
 	<string name="upgradeMsg">Debido a cambios en la base de datos todos los
 		datos de las notificaciones han sido borrados.\n\nDisculpe las
 		molestias.</string>
+	<string name="errorBadLoginMsg">Usuario o contraseña incorrectos</string>
 	<string name="errorServerResponseMsg">Error en respuesta del servidor</string>
 	<string name="errorConnectionMsg">Error durante la conexión con el servidor</string>
 	<string name="errorTimeoutMsg">Tiempo de espera agotado intentando conectar con el
 		servidor</string>
-
-
-
 </resources>
\ No newline at end of file
diff --git a/SWADroid/res/values/strings.xml b/SWADroid/res/values/strings.xml
index 3619c2d0..2799cef6 100644
--- a/SWADroid/res/values/strings.xml
+++ b/SWADroid/res/values/strings.xml
@@ -26,6 +26,8 @@
 	<string name="loginProgressDescription">Connecting...</string>
 	<string name="notificationsProgressTitle">Notifications</string>
 	<string name="notificationsProgressDescription">Retrieving new notifications</string>
+	<string name="testsDownloadProgressTitle">Tests</string>
+	<string name="testsDownloadProgressDescription">Obtaining test questions...</string>
 	<string name="coursesProgressTitle">Courses</string>
 	<string name="coursesProgressDescription">Retrieving courses...</string>
 	<string name="errorMsgLaunchingActivity">An error occurred during the execution of the
@@ -51,6 +53,11 @@
 	<string name="noContentMsg">No content</string>
 	<string name="yesMsg">Yes</string>
 	<string name="noMsg">No</string>
+	<string name="acceptMsg">Ok</string>
+	<string name="cancelMsg">Cancel</string>
+	<string name="selectCourseTitle">Select course</string>
+	<string name="noCourseSelectedMsg">You must select a course to download tests</string>
+	<string name="forbiddenCourseTestsDownloadMsg">The teacher of this course does not allows the tests download</string>
 	<string name="initialDialogTitle">IMPORTANT</string>
 	<string name="firstRunMsg">Before using the application for the first time you
 		must enter the user name and password for SWAD at the setup
@@ -59,18 +66,8 @@
 	</string>
 	<string name="upgradeMsg">Due to changes in the database all notifications
 		data have been deleted.\n\nSorry.</string>
+	<string name="errorBadLoginMsg">Incorrect user or password</string>
 	<string name="errorServerResponseMsg">Error in server response</string>
 	<string name="errorConnectionMsg">Error while connecting to server</string>
 	<string name="errorTimeoutMsg">Timeout trying to connect to the server</string>
-
-
-
-
-
-
-
-
-
-
-
 </resources>
\ No newline at end of file
diff --git a/SWADroid/src/es/ugr/swad/swadroid/modules/Login.java b/SWADroid/src/es/ugr/swad/swadroid/modules/Login.java
index 798f983a..7e502f49 100644
--- a/SWADroid/src/es/ugr/swad/swadroid/modules/Login.java
+++ b/SWADroid/src/es/ugr/swad/swadroid/modules/Login.java
@@ -72,7 +72,7 @@ public class Login extends Module {
     protected void connect() {
     	String progressDescription = getString(R.string.loginProgressDescription);
     	int progressTitle = R.string.loginProgressTitle;
-    	Connect con = new Connect(false, progressDescription, progressTitle);
+    	Connect con = new Connect(false, progressDescription, progressTitle, true);
     	Toast.makeText(this, progressDescription, Toast.LENGTH_LONG).show();
     	
         con.execute();
diff --git a/SWADroid/src/es/ugr/swad/swadroid/modules/Module.java b/SWADroid/src/es/ugr/swad/swadroid/modules/Module.java
index fef8aa1d..14b82192 100644
--- a/SWADroid/src/es/ugr/swad/swadroid/modules/Module.java
+++ b/SWADroid/src/es/ugr/swad/swadroid/modules/Module.java
@@ -457,7 +457,7 @@ public abstract class Module extends Activity {
                 .setNeutralButton(R.string.close_dialog,
                 new DialogInterface.OnClickListener() {
                     public void onClick(DialogInterface dialog, int id) {
-                        Module.this.finish();
+                        finish();
                     }
                 })
                 .setIcon(R.drawable.erroricon).show();
@@ -501,27 +501,29 @@ public abstract class Module extends Activity {
      */
     protected class Connect extends AsyncTask<String, Void, Void> {
         /**
-         * Progress dialog.
+         * Progress dialog
          */
         ProgressDialog dialog = new ProgressDialog(Module.this);
         /**
-         * Exception pointer.
+         * Exception pointer
          */
         Exception e = null;
         String progressDescription;
         int progressTitle;
-        boolean showDialog;
+        boolean showDialog, isLoginModule;
 
 		/**
          * Shows progress dialog and connects to SWAD in background
 		 * @param progressDescription Description to be showed in dialog
 		 * @param progressTitle Title to be showed in dialog
 		 */
-		public Connect(boolean showDialog, String progressDescription, int progressTitle) {
+		public Connect(boolean showDialog, String progressDescription, int progressTitle, Boolean... isLogin) {
 			super();
 			this.progressDescription = progressDescription;
 			this.progressTitle = progressTitle;
 			this.showDialog = showDialog;
+			assert isLogin.length <= 1;
+		    this.isLoginModule = isLogin.length > 0 ? isLogin[0].booleanValue() : false;
 		}
 
 		/* (non-Javadoc)
@@ -584,11 +586,16 @@ public abstract class Module extends Activity {
                  */
                 if(e instanceof SoapFault) {
                     SoapFault es = (SoapFault) e;
+            		
+            		if(isLoginModule)
+            			errorMsg = getString(R.string.errorBadLoginMsg);
+            		else
+            			errorMsg = es.getMessage();
                     
             		if(isDebuggable)
-            			Log.e(es.getClass().getSimpleName(), es.getMessage());
+            			Log.e(e.getClass().getSimpleName(), errorMsg);
             		
-                    error(es.getMessage());
+        			error(errorMsg);
                 } else if (e instanceof XmlPullParserException) {
                 	errorMsg = getString(R.string.errorServerResponseMsg);