diff --git a/htdocs/admin/translation.php b/htdocs/admin/translation.php
index 5895ea5905d..297ca4c212a 100644
--- a/htdocs/admin/translation.php
+++ b/htdocs/admin/translation.php
@@ -155,7 +155,7 @@ if ($action == 'add') {
 
 		$sql = "INSERT INTO ".MAIN_DB_PREFIX."overwrite_trans(lang, transkey, transvalue, entity) VALUES ('".$db->escape($langcode)."','".$db->escape($transkey)."','".$db->escape($transvalue)."', ".((int) $conf->entity).")";
 		$result = $db->query($sql);
-		if ($result > 0) {
+		if ($result) {
 			$db->commit();
 			setEventMessages($langs->trans("RecordSaved"), null, 'mesgs');
 			$action = "";
@@ -177,7 +177,7 @@ if ($action == 'add') {
 if ($action == 'delete') {
 	$sql = "DELETE FROM ".MAIN_DB_PREFIX."overwrite_trans WHERE rowid = ".((int) $id);
 	$result = $db->query($sql);
-	if ($result >= 0) {
+	if ($result) {
 		setEventMessages($langs->trans("RecordDeleted"), null, 'mesgs');
 	} else {
 		dol_print_error($db);
@@ -297,7 +297,7 @@ foreach ($modulesdir as $keydir => $tmpsearchdir) {
 
 		$result = $newlang->load($langkey, 0, 0, '', 0); // Load translation files + database overwrite
 		$result = $newlangfileonly->load($langkey, 0, 0, '', 1); // Load translation files only
-		if ($result < 0) {
+		if (!$result) {
 			print 'Failed to load language file '.$tmpfile.'<br>'."\n";
 		} else {
 			$listoffiles[$langkey] = $tmpfile;
diff --git a/htdocs/comm/propal/card.php b/htdocs/comm/propal/card.php
index a315a1fb1c9..281d520ece2 100644
--- a/htdocs/comm/propal/card.php
+++ b/htdocs/comm/propal/card.php
@@ -1036,7 +1036,8 @@ if (empty($reshook)) {
 			}
 		}
 
-		if (!$error && ($qty >= 0) && (!empty($product_desc) || (!empty($idprod) && $idprod > 0))) {
+		$propal_qty_requirement = (!empty($conf->global->PROPAL_ENABLE_NEGATIVE_QTY) ? ($qty >= 0 || $qty <= 0) : $qty >= 0);
+		if (!$error && $propal_qty_requirement && (!empty($product_desc) || (!empty($idprod) && $idprod > 0))) {
 			$pu_ht = 0;
 			$pu_ttc = 0;
 			$pu_ht_devise = 0;
diff --git a/htdocs/core/actions_sendmails.inc.php b/htdocs/core/actions_sendmails.inc.php
index 21427edba07..fefa9a33330 100644
--- a/htdocs/core/actions_sendmails.inc.php
+++ b/htdocs/core/actions_sendmails.inc.php
@@ -370,7 +370,7 @@ if (($action == 'send' || $action == 'relance') && !GETPOST('addfile') && !GETPO
 				$action = 'presend';
 			} else {
 				$result = $mailfile->sendfile();
-				if ($result) {
+				if ($result >= 0) {
 					// Initialisation of datas of object to call trigger
 					if (is_object($object)) {
 						if (empty($actiontypecode)) {
diff --git a/htdocs/core/class/commonobject.class.php b/htdocs/core/class/commonobject.class.php
index 2416c2ec5ac..35b99d90541 100644
--- a/htdocs/core/class/commonobject.class.php
+++ b/htdocs/core/class/commonobject.class.php
@@ -9349,7 +9349,12 @@ abstract class CommonObject
 					$line = (object) $line;
 				}
 
-				$result = $line->create($user, 1);
+				$result = 0;
+				if (method_exists($line, 'insert')) {
+					$result = $line->insert($user, 1);
+				} elseif (method_exists($line, 'create')) {
+					$result = $line->create($user, 1);
+				}
 				if ($result < 0) {
 					$this->error = $line->error;
 					$this->db->rollback();
diff --git a/htdocs/product/stock/tpl/stockcorrection.tpl.php b/htdocs/product/stock/tpl/stockcorrection.tpl.php
index 9906b3606e7..f87fa3d55f3 100644
--- a/htdocs/product/stock/tpl/stockcorrection.tpl.php
+++ b/htdocs/product/stock/tpl/stockcorrection.tpl.php
@@ -67,16 +67,16 @@ print '<script type="text/javascript">
 				init_price();
 			});
 			jQuery("#nbpiece").keyup(function(event) {
-				console.log("We enter a qty on "+event.which);
-				if ( event.which == 54 ) {  /* char - */
+				console.log("We enter a qty on "+event.key);
+				if ( event.key == "-" ) {  /* char - */
 					console.log("We set direction to value 1");
 					jQuery("#nbpiece").val(jQuery("#nbpiece").val().replace("-", ""));
-
 					jQuery("#mouvement option").removeAttr("selected").change();
 					jQuery("#mouvement option[value=1]").attr("selected","selected").trigger("change");
 					jQuery("#mouvement").trigger("change");
-				} else if ( event.which == 187 ) {  /* char + */
+				} else if ( event.key == "+" ) {  /* char + */
 					console.log("We set direction to value 0");
+					jQuery("#nbpiece").val(jQuery("#nbpiece").val().replace("+", ""));
 					jQuery("#mouvement option").removeAttr("selected").change();
 					jQuery("#mouvement option[value=0]").attr("selected","selected").trigger("change");
 					jQuery("#mouvement").trigger("change");