diff --git a/htdocs/admin/system/modules.php b/htdocs/admin/system/modules.php
index 7aa01be169e..e3dcddaff24 100644
--- a/htdocs/admin/system/modules.php
+++ b/htdocs/admin/system/modules.php
@@ -48,22 +48,45 @@ $modules = array();
 $modules_names = array();
 $modules_files = array();
 
-// Load list of modules
-foreach($conf->file->dol_document_root as $searchdir)
+foreach ($conf->file->dol_document_root as $type => $dirroot)
 {
-	$dirtoscan = $searchdir . "/includes/modules/";
-	$handle=opendir($dirtoscan);
+	$modulesdir[] = $dirroot . "/includes/modules/";
+	
+	if ($type == 'alt')
+	{	
+		$handle=@opendir($dirroot);
+		if (is_resource($handle))
+		{
+			while (($file = readdir($handle))!==false)
+			{
+			    if (is_dir($dirroot.'/'.$file) && substr($file, 0, 1) <> '.' && substr($file, 0, 3) <> 'CVS' && $file != 'includes')
+			    {
+			    	if (is_dir($dirroot . '/' . $file . '/includes/modules/'))
+			    	{
+			    		$modulesdir[] = $dirroot . '/' . $file . '/includes/modules/';
+			    	}
+			    }
+			}
+			closedir($handle);
+		}
+	}
+}
+
+// Load list of modules
+foreach($modulesdir as $dir)
+{
+	$handle=opendir($dir);
     if (is_resource($handle))
     {
     	while (($file = readdir($handle))!==false)
     	{
-    		if (is_readable($dirtoscan.$file) && substr($file, 0, 3) == 'mod' && substr($file, dol_strlen($file) - 10) == '.class.php')
+    		if (is_readable($dir.$file) && substr($file, 0, 3) == 'mod' && substr($file, dol_strlen($file) - 10) == '.class.php')
     		{
     			$modName = substr($file, 0, dol_strlen($file) - 10);
 
     			if ($modName)
     			{
-    				include_once($dirtoscan.$file);
+    				include_once($dir.$file);
     				$objMod = new $modName($db);
 
     				$modules[$objMod->numero]=$objMod;
diff --git a/htdocs/exports/class/export.class.php b/htdocs/exports/class/export.class.php
index 72ee696c947..12e9c123241 100644
--- a/htdocs/exports/class/export.class.php
+++ b/htdocs/exports/class/export.class.php
@@ -1,6 +1,6 @@
 <?php
 /* Copyright (C) 2005-2011 Laurent Destailleur  <eldy@users.sourceforge.net>
- * Copyright (C) 2005-2009 Regis Houssin        <regis@dolibarr.fr>
+ * Copyright (C) 2005-2011 Regis Houssin        <regis@dolibarr.fr>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -72,11 +72,32 @@ class Export
         $var=true;
         $i=0;
 
-		//$dir=DOL_DOCUMENT_ROOT."/includes/modules";
-		foreach($conf->file->dol_document_root as $dirroot)
+		foreach ($conf->file->dol_document_root as $type => $dirroot)
 		{
-			$dir = $dirroot.'/includes/modules';
+			$modulesdir[] = $dirroot . "/includes/modules/";
+			
+			if ($type == 'alt')
+			{	
+				$handle=@opendir($dirroot);
+				if (is_resource($handle))
+				{
+					while (($file = readdir($handle))!==false)
+					{
+					    if (is_dir($dirroot.'/'.$file) && substr($file, 0, 1) <> '.' && substr($file, 0, 3) <> 'CVS' && $file != 'includes')
+					    {
+					    	if (is_dir($dirroot . '/' . $file . '/includes/modules/'))
+					    	{
+					    		$modulesdir[] = $dirroot . '/' . $file . '/includes/modules/';
+					    	}
+					    }
+					}
+					closedir($handle);
+				}
+			}
+		}
 
+		foreach($modulesdir as $dir)
+		{
 			// Search available exports
 			$handle=@opendir($dir);
 			if (is_resource($handle))
@@ -84,7 +105,7 @@ class Export
                 // Search module files
 			    while (($file = readdir($handle))!==false)
 				{
-					if (preg_match("/^(mod.*)\.class\.php$/i",$file,$reg))
+					if (is_readable($dir.$file) && preg_match("/^(mod.*)\.class\.php$/i",$file,$reg))
 					{
 						$modulename=$reg[1];
 
@@ -96,7 +117,7 @@ class Export
 						if ($enabled)
 						{
 							// Chargement de la classe
-							$file = $dir."/".$modulename.".class.php";
+							$file = $dir.$modulename.".class.php";
 							$classname = $modulename;
 							require_once($file);
 							$module = new $classname($this->db);
diff --git a/htdocs/langs/en_US/install.lang b/htdocs/langs/en_US/install.lang
index 2abf8796bcd..be842560ee5 100644
--- a/htdocs/langs/en_US/install.lang
+++ b/htdocs/langs/en_US/install.lang
@@ -96,7 +96,7 @@ DirectoryRecommendation=It is recommanded to use a directory outside of your dir
 LoginAlreadyExists=Already exists
 DolibarrAdminLogin=Dolibarr admin login
 AdminLoginAlreadyExists=Dolibarr administrator account '<b>%s</b>' already exists. Go back, if you want to create another one. 
-WarningRemoveInstallDir=Warning, for security reasons, once the install or upgrade is complete, you should remove the <b>install<b> directory or add a file called <b>install.lock</b> into Dolibarr root directory, in order to avoid malicious use of it.
+WarningRemoveInstallDir=Warning, for security reasons, once the install or upgrade is complete, you should add a file called <b>install.lock</b> into Dolibarr document directory, in order to avoid malicious use of install process.
 ThisPHPDoesNotSupportTypeBase=This PHP system does not support any interface to access database type %s
 FunctionNotAvailableInThisPHP=Not available on this PHP
 MigrateScript=Migration script
diff --git a/htdocs/langs/fr_FR/install.lang b/htdocs/langs/fr_FR/install.lang
index ae12b68a6a7..0ae38bac4f8 100644
--- a/htdocs/langs/fr_FR/install.lang
+++ b/htdocs/langs/fr_FR/install.lang
@@ -97,7 +97,7 @@ LoginAlreadyExists=Existe déjà
 DolibarrAdminLogin=Login de l'utilisateur administrateur de Dolibarr
 FailedToCreateAdminLogin=Echec de la création du compte administrateur Dolibarr.
 AdminLoginAlreadyExists=Compte administrateur Dolibarr '<b>%s</b>' déjà existant. Revenez en arrière si vous voulez en créer un autre.
-WarningRemoveInstallDir=Attention, pour des raisons de sécurité, une fois l'installation terminée, il est conseillé de supprimer manuellement le répertoire <b>install</b>, ou de placer dans le répertoire racine de Dolibarr un fichier nommé <b>install.lock</b> en lecture seule.
+WarningRemoveInstallDir=Attention, pour des raisons de sécurité, une fois l'installation terminée, il est conseillé de placer dans le répertoire document de Dolibarr un fichier nommé <b>install.lock</b> en lecture seule.
 ThisPHPDoesNotSupportTypeBase=Le système PHP ne supporte pas les interfaces d'accès pour les bases %s
 FunctionNotAvailableInThisPHP=Non disponible sur ce PHP
 MigrateScript=Script de migration