Index: /views/mods/mod_rechnungen/invoice_pdf.phtml
===================================================================
--- /views/mods/mod_rechnungen/invoice_pdf.phtml	(revision 8055)
+++ /views/mods/mod_rechnungen/invoice_pdf.phtml	(revision 8056)
@@ -197,6 +197,8 @@
 			
 			$pdf->setXY($prod_left + 10, $prod_top);
-			$pdf->Cell( ((sizeof($this->view['basket']['mwst']) >= 1 || $this->get_option('wpsg_showMwstAlways') == '1')?87:102), 8, "Name", 1, 0, 'L');
-			
+			if(is_array($this->view['basket']['mwst'])) {	
+				$pdf->Cell( ((sizeof($this->view['basket']['mwst']) >= 1 || $this->get_option('wpsg_showMwstAlways') == '1')?87:102), 8, "Name", 1, 0, 'L');
+			}		
+
 			if (sizeof($this->view['basket']['mwst']) >= 1 || $this->get_option('wpsg_showMwstAlways') == '1')
 			{