I was working in a word document this morning and all was well, it has custom styles I've used many times. I made a bunch of changes to the document, saved it and sent it off. The person I sent it to said the numbering was messed up, when I re-opened it, sure enough, all the numbers have been replaced by black boxes.
I'm working in Office 2013, they are working in 2010 and 2007. Anyone ever seen this or know how to fix it?