Continuing the discussion from Help with curved wall please:
- The corner radius must be larger than the fillet radius for Follow Me tool to work correctly. If you need the radiuses to be identical, you will have to model the corner pieces separately (by splitting a sphere or a half sphere) or use Fredo’s Round Corner plugin.
- SketchUp cannot create faces with edges shorter than about 1 mm. This is the reason of the hole in your corner. Either reduce the number of segments in your arcs or/and scale up your model by 10, 100 or 1000x while modelling and then scale it back down when finished.