The shapebender plugin doesn't follow curved lines

Help me, why is this? When I click on an object in a group and component and then click the plugin icon to select a straight line first and a curved line for my shaping goal, it doesn’t appear as a curved line but remains straight.

Don’t double post.

Share the SketchUp model file.

Did you try to move the target curve there?
As far as I can remember, the plugin is based on parallelism with the X-axis because I imagine that at the underlying level it projects everything onto the Y-axis. The way you have it arranged I fear that the tool has problems identifying the correct projection.