Awesome thanks for your help. I'm fairly new to using cura and did not know about the red shades causing errors. I just assumed it was similar to what it shows in solid view and where it needs support material. Sadly I did not create this model. Ill be looking up ways in which i can fix this model to make it print properly. I definitely appreciate the resources you've linked
All those red spots in xray view are problems. It means there is an extra infinitely thin plane or a hole. The way cura creates these colors is that it sends a line from your "eye" through the model and out the other side and counts how many triangles it passes through in the STL. If it's even it gets a shade of blue or light blue or white. If it's odd it colors it red or brown.
So each red circle represents either a hole or extra infinitely thin wall (one can't make infinitely thin walls in real life) and they confuse cura as to what is "inside" and what is "outside" so it often prints nothing. You can zoom in on those spots in cura and then look at the same spots in cad and find the issues.
Or you can just submit it to an STL repair service.
netfabb free repair service is here (you have to create a free acocunt first):
Did you create this model? If so did you use sketchup? If so here is a great guide:
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