diff --git a/administrator/components/com_banners/tables/banner.php b/administrator/components/com_banners/tables/banner.php
index 6f9cfa3635826..f853ec9b7619a 100644
--- a/administrator/components/com_banners/tables/banner.php
+++ b/administrator/components/com_banners/tables/banner.php
@@ -92,6 +92,21 @@ public function check()
 			$this->ordering = self::getNextOrder($this->_db->quoteName('catid') . '=' . $this->_db->quote($this->catid) . ' AND state>=0');
 		}
 
+		if (empty($this->publish_up))
+		{
+			$this->publish_up = $this->getDbo()->getNullDate();
+		}
+
+		if (empty($this->publish_down))
+		{
+			$this->publish_down = $this->getDbo()->getNullDate();
+		}
+
+		if (empty($this->modified))
+		{
+			$this->modified = $this->getDbo()->getNullDate();
+		}
+
 		return true;
 	}
 
@@ -178,19 +193,19 @@ public function store($updateNulls = false)
 					break;
 				case 2:
 					$date = JFactory::getDate('+1 year ' . date('Y-m-d', strtotime('now')));
-					$this->reset = $this->_db->quote($date->toSql());
+					$this->reset = $date->toSql();
 					break;
 				case 3:
 					$date = JFactory::getDate('+1 month ' . date('Y-m-d', strtotime('now')));
-					$this->reset = $this->_db->quote($date->toSql());
+					$this->reset = $date->toSql();
 					break;
 				case 4:
 					$date = JFactory::getDate('+7 day ' . date('Y-m-d', strtotime('now')));
-					$this->reset = $this->_db->quote($date->toSql());
+					$this->reset = $date->toSql();
 					break;
 				case 5:
 					$date = JFactory::getDate('+1 day ' . date('Y-m-d', strtotime('now')));
-					$this->reset = $this->_db->quote($date->toSql());
+					$this->reset = $date->toSql();
 					break;
 			}
 
diff --git a/libraries/cms/installer/adapter/component.php b/libraries/cms/installer/adapter/component.php
index ab6cd3c2e90d9..366c2d6f82173 100644
--- a/libraries/cms/installer/adapter/component.php
+++ b/libraries/cms/installer/adapter/component.php
@@ -631,6 +631,7 @@ protected function storeExtension($deleteExisting = false)
 			$this->extension->client_id = 1;
 			$this->extension->params    = $this->parent->getParams();
 			$this->extension->custom_data = '';
+			$this->extension->system_data = '';
 		}
 
 		$this->extension->manifest_cache = $this->parent->generateManifestCache();
diff --git a/libraries/cms/installer/adapter/library.php b/libraries/cms/installer/adapter/library.php
index 3db755b2ff855..46096d9e00c91 100644
--- a/libraries/cms/installer/adapter/library.php
+++ b/libraries/cms/installer/adapter/library.php
@@ -266,6 +266,7 @@ protected function storeExtension()
 
 		// Custom data
 		$this->extension->custom_data = '';
+		$this->extension->system_data = '';
 
 		// Update the manifest cache for the entry
 		$this->extension->manifest_cache = $this->parent->generateManifestCache();
diff --git a/libraries/cms/installer/adapter/module.php b/libraries/cms/installer/adapter/module.php
index 2e9e715ebdfc7..e4fc3db00c8d4 100644
--- a/libraries/cms/installer/adapter/module.php
+++ b/libraries/cms/installer/adapter/module.php
@@ -374,6 +374,7 @@ protected function storeExtension()
 
 			// Custom data
 			$this->extension->custom_data    = '';
+			$this->extension->system_data    = '';
 			$this->extension->manifest_cache = $this->parent->generateManifestCache();
 
 			if (!$this->extension->store())
diff --git a/libraries/cms/installer/adapter/package.php b/libraries/cms/installer/adapter/package.php
index f3404a8e17cb1..a95ce6d3f706e 100644
--- a/libraries/cms/installer/adapter/package.php
+++ b/libraries/cms/installer/adapter/package.php
@@ -363,6 +363,7 @@ protected function storeExtension()
 
 			// Custom data
 			$this->extension->custom_data = '';
+			$this->extension->system_data = '';
 			$this->extension->params = $this->parent->getParams();
 		}