Why did my file fail to convert?
vCAD supports all versions of Revit, but we recommend uploading a Revit 2017 file. Make sure your Revit file does not use linked files as they are currently unsupported with vCAD. To use linked files, export the Revit file as an FBX. This process adds all linked files into the FBX.
If you are still having trouble getting your Revit file to convert, then you can use Revit's built-in FBX exporter. See our Exporting Guide for information regarding exporting Revit files.