Index: class.tx_commerce_pi1.php
===================================================================
--- class.tx_commerce_pi1.php	(revision 53297)
+++ class.tx_commerce_pi1.php	(working copy)
@@ -771,7 +771,7 @@
 				}
 			}
 		}
-		$content = $this->cObj->substituteMarkerArray($content, $markerArray);
+		$content = $this->cObj->substituteMarkerArray($content,(array) $markerArray);
 
 		return $content;
 	} // end of function makeArticleView