I've gotten tripped up on this in the past.
When you redraw your profile in Top View, make sure you check Workplane in your snaps, that should fix the problem.
You can see from the screenshot, the lines are not all all the same plane, causing the error message.
-2.7 GHz 12-Core Intel Xeon E5,64 GB 1866 MHz DDR3 running High Sierra
- 2014 i5 Mac Mini, 16GB 500HD Running Yosemite.