I have a set of files that were originally made in 2017 (SU and LO). I have opened the SU model since updating to 2018 and saved it. When I open the LO file in 2018 it won’t allow me to update the originally embedded SU model or re-import it. HOWEVER, If I save the SU file to a legacy format (2017) it seems to work. This is a temporary work-around, but any ideas of what might be causing the issue?
Windows 7 Professional - 64 Bit
Intel Core i7-6700 CPU @ 3.40 GHz
8.00 GB of RAM
NVIDIA Quadro M4000 Graphics