Hello every1 out there! First of all, I want to thank you for reading this post. It hasn't been long since I've been registered in this website and I find this service to be great! As for myself, I am an architect, and I like to do 3d models (for work, or just for fun). I tried to upload a model called circles1.obj and it had some errors in it. I did it with Google Sketchup. So I went back to the model, resize it, and uploaded it. It worked...but the model was so big that the prize was very high!! Of course, no one would see it, or even buy it. So I tried to work on my model again by reducing it's size with about 50%... problem is, it still has errors on it. I will try to delete the one that I had and upload this new one, but anyways, if someone can help me understand why this happens I would gladly appreciate it. Thanks again, and best of all to everybody. Happy Modeling !!