Index: sections_helper.php
===================================================================
--- sections_helper.php	(revision 14656)
+++ sections_helper.php	(working copy)
@@ -238,6 +238,9 @@
 					$section_prefix = $prefix;
 				}
 
+				if (is_float($section_params['priority'])) {
+					$section_params['priority'] = (string)$section_params['priority'];
+				}
 				$section_params['SectionPrefix'] = $section_prefix;
 				$section_params['url']['m_opener'] = 'r';
 				$section_params['url']['no_pass_through'] = 1;