Index: branches/5.2.x/core/kernel/db/db_connection.php
===================================================================
--- branches/5.2.x/core/kernel/db/db_connection.php
+++ branches/5.2.x/core/kernel/db/db_connection.php
@@ -1082,7 +1082,19 @@
 
 			// set 2nd checkpoint: begin
 			if ( $this->_profileSQLs ) {
-				$first_cell = count($ret) == 1 && $ret->fieldCount() == 1 ? current($ret->current()) : null;
+				$current_row = $ret->current();
+
+				if ( count($ret) == 1 && $ret->fieldCount() == 1 ) {
+					if ( is_array($current_row) ) {
+						$first_cell = current($current_row);
+					}
+					else {
+						$first_cell = $current_row;
+					}
+				}
+				else {
+					$first_cell = null;
+				}
 
 				if ( strlen($first_cell) > 200 ) {
 					$first_cell = substr($first_cell, 0, 50) . ' ...';