Error: Failed to determine plate orientations needed to apply loads for the windgenerator at Borland.Delphi.TObjectHelper.Dispatch(…)

When trying to generate the wind on a frame, you get the error:

Solution 1

• Only select the outer circumference of the frame before starting the windgenerator.

Solution 2

• When using the wind generator on canopy roofs, make sure the roofs sides have an inclination. If both roof sides have no inclination, the generator cannot see which side is the left one en which one is the right one, causing the error.
  For example: move both roof sides 1cm down to create the inclination. Generate the wind. Move the both roof sides 1cm up. Run the elastic analysis.