Nononono! Well, yes it is not old, but you're doing it WRONG!
First- get Indigo 0.5.6 from https://www.flipcode.dxbug.com/board.php?topic=485
Place the Indigo file over your old one (copy-paste right over it) and copy-paste THIS- "max_num_consec_rejections" "100" into your ini.txt file.
Then- into Maya. Open up this script. To make a light, grab an object, like a plane and turn its material's Incandescence value up.
But first of all go to create->camera->camera,aim, and up. Don't rename it. Position it where you want. That's the actual camera.
Next, if you want physical sky, create a point light (don't rename it!) and postiion it where you want the sun to be. The sun would be "pointing" in the direction of 0,0,0 (center of the grid).
Now, run the script. Select either None, skylight, or physical sky, and wait for your geometry to export.
Then, it should output in a window. Select everything in that window, and copy it. Then go into the Indigo folder. Create a txt file with any name. For this example I'll call it Maya.txt.
Paste the info that Maya exported into the Maya.txt file. Save it and rename it Maya.xml.
Then in your ini file where it says scene, type in Maya.xml, and run Indigo.
That should tell you everything you need to know.
Also- beware of hi-poly meshes (50k polys and up), you might crash Maya.
-Matt
Live the life you love, love the life you live