diff --git a/htdocs/main.inc.php b/htdocs/main.inc.php
index bd0d77d3389..e9f5b16b6a9 100644
--- a/htdocs/main.inc.php
+++ b/htdocs/main.inc.php
@@ -509,7 +509,7 @@ if ((!defined('NOCSRFCHECK') && empty($dolibarr_nocsrfcheck) && !empty($conf->gl
 		//print 'Unset POST by CSRF protection in main.inc.php.';	// Do not output anything because this create problems when using the BACK button on browsers.
 		setEventMessages('SecurityTokenHasExpiredSoActionHasBeenCanceledPleaseRetry', null, 'warnings');
 		//if ($conf->global->MAIN_FEATURES_LEVEL >= 1) setEventMessages('Unset POST and GET params by CSRF protection in main.inc.php (Token provided was not generated by the previous page).'."<br>\n".'$_SERVER[REQUEST_URI] = '.$_SERVER['REQUEST_URI'].' $_SERVER[REQUEST_METHOD] = '.$_SERVER['REQUEST_METHOD'].' GETPOST(token) = '.GETPOST('token', 'alpha').' $_SESSION[token] = '.$_SESSION['token'], null, 'warnings');
-		$savid = ((int) $_POST['id']);
+		if (isset($_POST['id'])) $savid = ((int) $_POST['id']);
 		unset($_POST);
 		//unset($_POST['action']); unset($_POST['massaction']);
 		//unset($_POST['confirm']); unset($_POST['confirmmassaction']);
@@ -517,7 +517,7 @@ if ((!defined('NOCSRFCHECK') && empty($dolibarr_nocsrfcheck) && !empty($conf->gl
 		unset($_GET['action']);
 		unset($_GET['confirmmassaction']);
 		unset($_GET['massaction']);
-		$_POST['id'] = ((int) $savid);
+		if (isset($savid)) $_POST['id'] = ((int) $savid);
 	}
 
 	// Note: There is another CSRF protection into the filefunc.inc.php
@@ -3146,7 +3146,7 @@ if (!function_exists("llxFooter")) {
 		}
 
 		// Wrapper to add log when clicking on download or preview
-		if (!empty($conf->blockedlog->enabled) && is_object($object) && $object->id > 0 && $object->statut > 0) {
+		if (!empty($conf->blockedlog->enabled) && is_object($object) && !empty($object->id) && $object->id > 0 && $object->statut > 0) {
 			if (in_array($object->element, array('facture'))) {       // Restrict for the moment to element 'facture'
 				print "\n<!-- JS CODE TO ENABLE log when making a download or a preview of a document -->\n";
 				?>
diff --git a/htdocs/projet/class/project.class.php b/htdocs/projet/class/project.class.php
index ce2db90fa5d..a570e8ed7bb 100644
--- a/htdocs/projet/class/project.class.php
+++ b/htdocs/projet/class/project.class.php
@@ -2050,7 +2050,7 @@ class Project extends CommonObject
 				$response->nbtodo++;
 
 				$project_static->statut = $obj->status;
-				$project_static->opp_status = $obj->opp_status;
+				$project_static->opp_status = $obj->fk_opp_status;
 				$project_static->datee = $this->db->jdate($obj->datee);
 
 				if ($project_static->hasDelay()) {
diff --git a/htdocs/projet/class/task.class.php b/htdocs/projet/class/task.class.php
index bd25398776e..5e17c92c562 100644
--- a/htdocs/projet/class/task.class.php
+++ b/htdocs/projet/class/task.class.php
@@ -2118,7 +2118,7 @@ class Task extends CommonObject
 
 		$now = dol_now();
 
-		$datetouse = ($this->date_end > 0) ? $this->date_end : ($this->datee > 0 ? $this->datee : 0);
+		$datetouse = ($this->date_end > 0) ? $this->date_end : ((isset($this->datee) && $this->datee > 0) ? $this->datee : 0);
 
 		return ($datetouse > 0 && ($datetouse < ($now - $conf->projet->task->warning_delay)));
 	}
diff --git a/htdocs/supplier_proposal/class/supplier_proposal.class.php b/htdocs/supplier_proposal/class/supplier_proposal.class.php
index eb003cdab9e..6d43222bcf2 100644
--- a/htdocs/supplier_proposal/class/supplier_proposal.class.php
+++ b/htdocs/supplier_proposal/class/supplier_proposal.class.php
@@ -2216,7 +2216,7 @@ class SupplierProposal extends CommonObject
 		$this->nbtodo = $this->nbtodolate = 0;
 		$clause = " WHERE";
 
-		$sql = "SELECT p.rowid, p.ref, p.datec as datec";
+		$sql = "SELECT p.rowid, p.ref, p.datec as datec, p.date_cloture as datefin";
 		$sql .= " FROM ".MAIN_DB_PREFIX."supplier_proposal as p";
 		if (!$user->rights->societe->client->voir && !$user->socid) {
 			$sql .= " LEFT JOIN ".MAIN_DB_PREFIX."societe_commerciaux as sc ON p.fk_soc = sc.fk_soc";
@@ -2239,13 +2239,13 @@ class SupplierProposal extends CommonObject
 			$label = $labelShort = '';
 			$status = '';
 			if ($mode == 'opened') {
-				$delay_warning = $conf->supplier_proposal->cloture->warning_delay;
+				$delay_warning = !empty($conf->supplier_proposal->cloture->warning_delay) ? $conf->supplier_proposal->cloture->warning_delay : 0;
 				$status = self::STATUS_VALIDATED;
 				$label = $langs->trans("SupplierProposalsToClose");
 				$labelShort = $langs->trans("ToAcceptRefuse");
 			}
 			if ($mode == 'signed') {
-				$delay_warning = $conf->supplier_proposal->facturation->warning_delay;
+				$delay_warning = !empty($conf->supplier_proposal->facturation->warning_delay) ? $conf->supplier_proposal->facturation->warning_delay : 0;
 				$status = self::STATUS_SIGNED;
 				$label = $langs->trans("SupplierProposalsToProcess"); // May be billed or ordered
 				$labelShort = $langs->trans("ToClose");
diff --git a/htdocs/user/class/user.class.php b/htdocs/user/class/user.class.php
index 37ce6544cd0..acfe581b3c9 100644
--- a/htdocs/user/class/user.class.php
+++ b/htdocs/user/class/user.class.php
@@ -3298,7 +3298,7 @@ class User extends CommonObject
 		$i = 0; $cursor_user = $id_user;
 
 		$useridfound = array($id_user);
-		while (!empty($this->parentof[$cursor_user])) {
+		while (!empty($this->parentof[$cursor_user]) && !empty($this->users[$this->parentof[$cursor_user]])) {
 			if (in_array($this->parentof[$cursor_user], $useridfound)) {
 				dol_syslog("The hierarchy of user has a recursive loop", LOG_WARNING);
 				return -1; // Should not happen. Protection against looping hierarchy