Hello, Alexander,
Currently point cloud export is supported in Boujou txt file format. It is a plain ascii text file with camera positions and x, y, z point coordinates.
The Wavefront OBJ file format support for point cloud export will be available in the next update.
Please note, that exporting 3d reconstruction results is disabled in trial mode.
With best regards,
Dmitry Semyonov
AgiSoft LLC