Rounded profile import

Sometimes, when importing IFCs, rounded profiles get the arc inverted. In this case an IFC from Tekla, where the oblong bolt holes get their ends inverted.

The second image shows the shapes as they of course should appear.

Is this a matter of adjusting precision, or a bug?

Hi Pekka,

Hope you’re great. I did make some changes recently that hopefully fixes the behaviour you’re seeing.
Can you please update to the latest installer on the downloads page at
and see if you get better results?
If not, is it possible to email me a sample file that demonstrates this so I can test?



Sample sent, I’m working with the newest versions.