We are a group of french students in engineering school ESME SUDRIA LYON. We have to modelize a coronary artery. The main goal is to obtain a 3D Viziualisation, datas about blood flows etc...
We follow this tutorial to help us : http://simvascular.github.io/clinicalCase3.html
But we are blocked about the step for creating a path.
We don't understand why on the right window it seems to be shaded and we cannot move forward. (screenshots)
![Image](https://preview.ibb.co/iqAxBx/Capture_d_e_cran_2018_04_24_a_11_40_59.png)
Thank you for your answer (and sorry for my english)