Yes I did. Besides having the file name in the correct format (basinname_Subbasin) you also need to match the name attribute of each element (polygon shape representing a watershed). If your shape file is already made you can edit the associated .dbf file with a program like GTK DBF editor to...
How do you get the Draw Map Objects feature to work, specifically for the subbasin element?
I believe I correctly followed the "strict naming convention" (basinname_Subbasin) indicated in the User's Manual as the Draw Map Objects option under the View menu is selectable. When I select Draw...