quando entro mi dice che manca il file AC1ST16.DLL
su internet ho trovato questa soluzione
Go to Windows System settings of your computer and in the Environment variables, make sure that the PATH variable contains the folder name C:\Program Files\Common Files\Autodesk Shared (without the backslash at the end, you can remove it using the Edit button).
If the file is really missing, you have to reinstall or repair your AutoCAD installation.
ma non riesco a tradurla completamente, mi date una mano?