when i try to save a file from archicad 9 into an 8.1 file when i open in 8.1 and i try to open the 3d window message says "diferent ac3d version"
i have worked from archicad 9 files and saved them into earlier version for people who i was working with that worked in an older version with no problems before. what do u guys think is going on and how might i be able to fix it?
