The output says the stream network shapefile is not in a supported format, even though the GUI recommends a shapefile. Also this output window closes are like 3 seconds and doesn't display as a text file in the scratch folder. My stream network is single part and has adequate density of vertices.

The output says the stream network shapefile is not in a supported format, even though the GUI recommends a shapefile. Also this output window closes are like 3 seconds and doesn't display as a text file in the scratch folder. My stream network is single part and has adequate density of vertices.
