Hi Wilfried,
not all types of e57 are supported yet. If you can share your e57 with us we can add it to testing and include this type. If you can share your data with us, please write/send link to support@capturingreality.com
Currently we support only point clouds which include reference points of views - like for terrestrial lasers. If you are importing just a general point cloud it will not work.
So far we’ve tested the most used laser scanners like Leica, Faro, Riegl, and few others.
We will keep updating it!