Cannot import models

I need to modify something I can’t make in shapr. I tried .stl but that is only for reference apparently. I converted it to .stp, parasolid and .igs. So far nothing has worked. Its not even a big model. It’s 45mm diamater and 5mm tall. (I converted it using a program called CAD Exchanger)

When I used a .stp it sat on the loading screen with the blue bar barely loaded then just went back to an empty workspace. With the parasolid (.x_t) it sat there with the blue circle full for over 10 minutes doing nothing so I quit out of that. Now the .igs also just sits there with the blue bar barely loaded. Nothing will load it seems. What’s going on?

Can you please send the file to, we will take a look.