Do you have the right version of the package for your Revit release? Go into your list of installed packages and check the last two digits of the Archi-Lab version. They should align with the Revit version (see the link for more info).
Do you have the right version of the package for your Revit release? Go into your list of installed packages and check the last two digits of the Archi-Lab version. They should align with the Revit version (see the link for more info).