im working on our drawing templates, we have the same templates we use for 2012 - 2016 and there has never been a problem. i went into the drawing format to make a change, but i decided i didnt want to mess anything up so i closed without saving. now even though i havent saved the template it wont show up in 2015, which is weird because it works in 2012 and 2016. Any ideas?
When you said you "went into the drawing format to make a change", I assume you meant the sheet format? In any case, see if #2 at Frequently Asked Forum Questions will help. Maybe not, but it's a start.