Clear and disable output buffering before sendind file content to browser

cosmogramme/cosmozend/application/modules/cosmo/controllers/RunLogController.php

@@ -59,6 +59,7 @@ class Cosmo_RunLogController extends Zend_Controller_Action {
 		header('Content-length: ' . $run->getFileSize());
 		header('Content-Type: application/octet-stream');
 		header('Content-Disposition: attachment; filename="' . basename($file_path) . '"');
+		ob_end_clean();
 		readfile($file_path);
 	}
 }