Index: /mods/wpsg_mod_rechnungen.class.php
===================================================================
--- /mods/wpsg_mod_rechnungen.class.php	(revision 8119)
+++ /mods/wpsg_mod_rechnungen.class.php	(revision 8120)
@@ -1256,5 +1256,5 @@
 			}
 			
-			if (!$bOK) throw new \Exception(__('Kein Produkt ausgewÀhlt!', 'wpsg'));
+			if (!$bOK && !$preview) throw new \Exception(__('Kein Produkt ausgewÀhlt!', 'wpsg'));
 			
 			$this->shop->view['output'] = $bOutput;
@@ -1280,6 +1280,10 @@
 			$this->shop->view['data']['shipping_land'] = $this->db->fetchRow("SELECT L.* FROM `".WPSG_TBL_LAND."` AS L WHERE L.`id` = '".wpsg_q(wpsg_getStr($this->shop->view['data']['shipping_land']))."'");
 
-			if (wpsg_checkInput($_REQUEST['wpsg_rechnungen_datum'], WPSG_SANITIZE_DATE_EN)) $this->shop->view['rDatum'] = date('Y-m-d', strtotime($_REQUEST['wpsg_rechnungen_datum']));
-			else throw \wpsg\Exception::getSanitizeException();
+			if (!$preview) {
+			
+				if (wpsg_checkInput($_REQUEST['wpsg_rechnungen_datum'], WPSG_SANITIZE_DATE_EN)) $this->shop->view['rDatum'] = date('Y-m-d', strtotime($_REQUEST['wpsg_rechnungen_datum']));
+				else throw \wpsg\Exception::getSanitizeException();
+
+			}
 		
 			if ($this->shop->hasMod('wpsg_mod_shippingadress') && $this->shop->callMod('wpsg_mod_shippingadress', 'check_different_shippingadress', array('k_id' => @$this->shop->view['data']['k_id'], 'o_id' => @$this->shop->view['data']['id']))) {