The layout files are just xml and the & symbol is not allowed by itself.
You will need to use & instead
http://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Predefined_entities_in_XML
The layout files are just xml and the & symbol is not allowed by itself.
You will need to use & instead
http://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Predefined_entities_in_XML