Hi guys, I created a very simple pair of surfaces and tried to trim them with a spline and didin´t work so I tried it with a aimple arc (sketch9) and doesen´t work neither.

The file is attached, I don´t remember to have an issue like this before and I use surfaces a lot, could you please take a look? I don´t think I´m doing

nothing wrong might be a program issue. If not please I would like anybody to point what it could be.

Thanks in advance.