Problems using "Ground Extraction" in OpenRoads

Hi, I've created a .3mx file using ContextCapture, and now I've attached it to my OpenRoads model and I've been trying to generate a terrain from it (.tin file)

I've tried to follow the instructions given in this video: https://communities.bentley.com/products/road___site_design/w/road_and_site_design__wiki/37308/video-import-3mx-data-into-openroads-designer-and-create-a-terrain

However, there is an error and I cannot figure out what is going on. It says: "Error occured during POD creation, processing aborted!"

I attached the image from my Open Roads error below:

I've noticed that my "Ground Extraction" is quite different from the one that is show in the referenced video above. In the video, the only  output selected is "Terrain", "Classified Point Cloud" is not selected. However, if I do not select "Classified Point Clod"  the software does not allow me to select "Terrain"

Could some one help me to go through this problem? What am I doing wrong? Could the problem be at my .3mx file which I generated by myself?