Problem
Model file is empty when exported using the Smart Build Insight Revit plug-in.
Cause
The content libraries might be missing. This could occur if you might have changed the language by modifying the Revit desktop shortcut. If you changed the language via the desktop shortcut, Revit does not automatically install the content pack for the new language.
Solution
Install the necessary content libraries for the new language. If installing the content libraries does not fix the problem, try reinstalling Revit in the language that you want. For more information on how to install language specific content libraries, refer to Revit help.