In AutoCAD 2015, I could not import a set of files (Layouts) into the Sheet Set Manager because it wrongly implied that the characters I was importing were more than 64 characters. After a few tries, I opened 2014 and they imported smoothly. I have abandoned 2015 until I have a solution.
On the second machine with 2015, it will not work also, however, right-click on the layout tab and "Import Layout To Sheet Set" works. This is tideous if you have lots of file so import.
Any solutions?