Why does LOFT sometimes twist or fail unexpectedly?

[indiancad]

I’ve had LOFT produce a twisted or unexpected shape even when all the profiles looked correct.

One thing that helped was checking the order and orientation of the profiles before lofting. If needed, changing the loft settings or adding guide curves can give much better control over the final shape.

It’s a small detail, but it can make a big difference in complex 3D models.

How do you usually control the shape when LOFT starts behaving unexpectedly?