I am glad to see that you managed to go through all the steps.

Please make sure that you have allocated enough resources to the virtual box (CPU and disk space). However, this can be tuned later on, according to the needs. I will come back to the tutorial this week, as there are things to be explained there. I only hope to have the time to write this blog by Tuesday... however, this is for now quite unclear. Last week has been very hectic and I needed that week-end to disconnect a bit.