Index: branches/5.2.x/core/kernel/processors/main_processor.php
===================================================================
--- branches/5.2.x/core/kernel/processors/main_processor.php
+++ branches/5.2.x/core/kernel/processors/main_processor.php
@@ -1176,6 +1176,10 @@
 		$current_params = $this->Application->Parser->Params;
 
 		foreach ($current_params as $param_name => $param_value) {
+			if ( is_object($param_value) && !method_exists($param_value, '__toString') ) {
+				$param_value = 'ClassName: ' . get_class($param_value);
+			}
+
 			$current_params[$param_name] = $param_name . ' = "' . $param_value . '"';
 		}