diff --git a/layouts/v7/skins/vtiger/style.less b/layouts/v7/skins/vtiger/style.less
index a30175e7129f6da3c3a090e3e0798426c3ee25ad..99b1a55ac8e6d48eff253eb92dc1bf59e186053d 100644
--- a/layouts/v7/skins/vtiger/style.less
+++ b/layouts/v7/skins/vtiger/style.less
@@ -8459,3 +8459,6 @@ input:focus:-ms-input-placeholder { color:transparent; } /* IE 10+ */
 .navbar-fixed-top {
     z-index: 1095 !important;
 }
+body .fc {
+overflow:auto;
+}
diff --git a/modules/Calendar/actions/DragDropAjax.php b/modules/Calendar/actions/DragDropAjax.php
index 546572090cd7d291a9f7b1e875e73e13274fd393..b56b56e41d5030adb990092f57e3ad5e8502c09e 100755
--- a/modules/Calendar/actions/DragDropAjax.php
+++ b/modules/Calendar/actions/DragDropAjax.php
@@ -16,6 +16,8 @@ class Calendar_DragDropAjax_Action extends Calendar_SaveAjax_Action {
 	}
 
 	public function process(Vtiger_Request $request) {
+        ini_set('error_reporting', '6135');
+        ini_set('display_errors', 'on');
 		$mode = $request->getMode();
 		if(!empty($mode) && $this->isMethodExposed($mode)) {
 			$this->invokeExposedMethod($mode, $request);
@@ -251,7 +253,7 @@ class Calendar_DragDropAjax_Action extends Calendar_SaveAjax_Action {
 					}
 					$result['recurringRecords'] = true;
 				} else {
-					$oldStartDateTime = '';
+                    $oldStartDateTime = array();
 					$oldStartDateTime[] = $record->get('date_start');
 					$oldStartDateTime[] = $record->get('time_start');
 					$oldStartDateTime = implode(' ', $oldStartDateTime);
@@ -260,7 +262,7 @@ class Calendar_DragDropAjax_Action extends Calendar_SaveAjax_Action {
 					$record->set('date_start',$parts[0]);
 					$record->set('time_start',$parts[1]);
 
-					$oldEndDateTime = '';
+					$oldEndDateTime = array();
 					$oldEndDateTime[] = $record->get('due_date');
 					$oldEndDateTime[] = $record->get('time_end');
 					$oldEndDateTime = implode(' ',$oldEndDateTime);