Well, I've managed to create idle, walking, and "take" animations. It requires a lot of work, but it's doable.
Now I'm stuck and I fear I won't be able to proceed. Blender doesn't seem to export the camera when creating the hidden geometry. I found a stale page with a download link, but the script was the same as the one I had installed. I might try an older version of Blender later, but for now I am going to take a break.
At first I didn't think the 3ds export worked until I tried scaling my scene in Blender to a gigantic size. Turns out it was just too small for the Wintermute scene editor to draw. My guess is the camera creates the scale. The combo box doesn't have any cameras listed.