diff --git a/htdocs/install/check.php b/htdocs/install/check.php
index 3323cb7f4db..725d52e2675 100644
--- a/htdocs/install/check.php
+++ b/htdocs/install/check.php
@@ -292,7 +292,7 @@ else
 			$conf->setValues($db);
 			// Current version is $conf->global->MAIN_VERSION_LAST_UPGRADE
 			// Version to install is DOL_VERSION
-			$dolibarrlastupgradeversionarray=preg_split('/[\.-]/',isset($conf->global->MAIN_VERSION_LAST_UPGRADE)?$conf->global->MAIN_VERSION_LAST_UPGRADE:$conf->global->MAIN_VERSION_LAST_INSTALL);
+			$dolibarrlastupgradeversionarray=preg_split('/[\.-]/',isset($conf->global->MAIN_VERSION_LAST_UPGRADE) ? $conf->global->MAIN_VERSION_LAST_UPGRADE : (isset($conf->global->MAIN_VERSION_LAST_INSTALL)?$conf->global->MAIN_VERSION_LAST_INSTALL:''));
 			$dolibarrversiontoinstallarray=versiondolibarrarray();
 		}
 
diff --git a/htdocs/install/etape2.php b/htdocs/install/etape2.php
index 2c10a87500e..73ce41d7087 100644
--- a/htdocs/install/etape2.php
+++ b/htdocs/install/etape2.php
@@ -176,9 +176,11 @@ if ($_POST["action"] == "set")
 				}
 
 				dolibarr_install_syslog("Request: ".$buffer,LOG_DEBUG);
-				if ($db->query($buffer))
+				$resql=$db->query($buffer);
+				if ($resql)
 				{
 					// print "<td>OK requete ==== $buffer</td></tr>";
+					$db->free($resql);
 				}
 				else
 				{
@@ -312,9 +314,11 @@ if ($_POST["action"] == "set")
 						}
 
 						dolibarr_install_syslog("Request: ".$buffer,LOG_DEBUG);
-						if ($db->query($buffer))
+						$resql=$db->query($buffer);
+						if ($resql)
 						{
 							//print "<td>OK requete ==== $buffer</td></tr>";
+							$db->free($resql);
 						}
 						else
 						{
@@ -399,9 +403,11 @@ if ($_POST["action"] == "set")
 				if ($buffer)
 				{
 					dolibarr_install_syslog("Request: ".$buffer,LOG_DEBUG);
-					if ($db->query($buffer))
+					$resql=$db->query($buffer);
+					if ($resql)
 					{
 						$ok = 1;
+						$db->free($resql);
 					}
 					else
 					{
@@ -435,7 +441,7 @@ if ($_POST["action"] == "set")
 
 	/***************************************************************************************
 	 *
-	 * Chargement fichier data.sql
+	 * Load files data/*.sql
 	 *
 	 ***************************************************************************************/
 	if ($ok && $createdata)
@@ -479,13 +485,15 @@ if ($_POST["action"] == "set")
 						}
 
 						//dolibarr_install_syslog("Request: ".$buffer,LOG_DEBUG);
-						if ($db->query($buffer))
+						$resql=$db->query($buffer);
+						if ($resql)
 						{
 							$ok = 1;
+							$db->free($resql);
 						}
 						else
 						{
-							if ($db->errno() == 'DB_ERROR_RECORD_ALREADY_EXISTS')
+							if ($db->lasterrno() == 'DB_ERROR_RECORD_ALREADY_EXISTS')
 							{
 								//print "<tr><td>Insertion ligne : $buffer</td><td>";
 							}
diff --git a/htdocs/install/inc.php b/htdocs/install/inc.php
index fa37a53852f..b7831cfdbdb 100644
--- a/htdocs/install/inc.php
+++ b/htdocs/install/inc.php
@@ -66,7 +66,6 @@ else
 	define('LOG_DEBUG',7);
 }
 
-
 $includeconferror='';
 $conffile = "../conf/conf.php";
 
@@ -240,7 +239,7 @@ function conf($dolibarr_main_document_root)
 		if (@is_writable('/tmp')) define('SYSLOG_FILE','/tmp/dolibarr_install.log');
 		else if (! empty($_ENV["TMP"])  && @is_writable($_ENV["TMP"]))  define('SYSLOG_FILE',$_ENV["TMP"].'/dolibarr_install.log');
 		else if (! empty($_ENV["TEMP"]) && @is_writable($_ENV["TEMP"])) define('SYSLOG_FILE',$_ENV["TEMP"].'/dolibarr_install.log');
-		else if (@is_writable('../../../../')) define('SYSLOG_FILE','../../../../dolibarr_install.log');	// For DoliWamp
+		else if (@is_writable('../../../../') && @file_exists('../../../../startdoliwamp.bat')) define('SYSLOG_FILE','../../../../dolibarr_install.log');	// For DoliWamp
 		else if (@is_writable('../../')) define('SYSLOG_FILE','../../dolibarr_install.log');				// For others
 		//print 'SYSLOG_FILE='.SYSLOG_FILE;exit;
 	}