I have a file that was created in excel 2007, updated in excel 2010. No issues. I have since upgraded to Office 2013. I've made updates to the file within excel 2013 and now no one can open in any lower version of excel.
The software just hangs. I've tried to convert the file to various versions and opened with the repair process. No joy.
I've been all over this site and have found nothing to help me out. Any thoughts?