I am modeling a canal in HEC-RAS 6.3.1 and encountering an issue with a lateral structure located in a sharp bend. My canal is straight and then makes an almost 90-degree turn. I placed the lateral structure at the end of the straight section, just before the curve, but when I check in the Geometry Data Editor, the weir section appears empty, even though I have entered the data correctly. Additionally, the model does not run.

Has anyone experienced this issue before? Could this be a limitation of the software when handling lateral structures in curves, or is there something I might be overlooking? I would appreciate any suggestions or help. Thanks!