Prospect currently does not support native files from Archicad.
However, if you are using Archicad and would like to use Prospect, it is still possible to do so by saving/exporting your Archicad file as a Sketchup file.
Read the support article here.
Once it is saved as a Sketchup file, it is then possible to drag and drop it into the Prospect launcher for viewing in virtual reality with Prospect software.
In the future, we plan to support native Archicad files.