Looks like Dictionary was introduced in Max 2017.1. The best you could do is install 2017, update it, use this startup script there, and then Save As 2016 format. To keep working in 2016. Sorry. http://help.autodesk.com/view/3DSMAX/2018/ENU/?guid=__files_GUID_39A9FDB8_E508_413F_BF58_EC8F52BE7CA9_htm