Please help

,
I so want to use indigo it looks so cool!!!
But I have an error message.
Blender 2.49b Intel with Python 1.5.1, Blendigo 2.4.4 on Mac OS x 12.5.8 Leopard
So I have the python error message!
And the message in the terminal:
Last login: Tue Oct 13 21:17:41 on console
/Applications/Blender/blender.app/Contents/MacOS/blender ; exit;
apn-77-113-4-60:~ ewa$ /Applications/Blender/blender.app/Contents/MacOS/blender ; exit;
Compiled with Python version 2.5.1.
Checking for installed Python... got it!
----------------------
BLENDIGO v2.4.4
----------------------
*nix-platform : darwin
os.sep : /
matdbPreviews : /Users/ewa/.blender/scripts/blendigopkg/matdb/previews
assetsPath : /Users/ewa/.blender/scripts/blendigopkg/assets
matdbDownloads : /Users/ewa/.blender/scripts/blendigopkg/matdb
Converting Blender Material: Material.001
Export Still to /private/tmp/default.igs
INDIGO EXPORT
* Material.014
* Material.015
* Material.016
* Material.017
* Material.018
* Material.019
* Concrete
* ChromeMinnaertBlinn
* Floor
Converting Blender Material: Floor
Traceback (most recent call last):
File "/Users/ewa/.blender/scripts/blendigo.py", line 4251, in buttonEvt
exportStill(defaultFile)
File "/Users/ewa/.blender/scripts/blendigo.py", line 3383, in exportStill
export(filename, False)
File "/Users/ewa/.blender/scripts/blendigo.py", line 3331, in export
if exportIndigoScene(filename, objlist, meshlist, matlist):
File "/Users/ewa/.blender/scripts/blendigo.py", line 3153, in exportIndigoScene
il, matname = exportMaterial(mat, matsfile, exportedmatlist)
File "/Users/ewa/.blender/scripts/blendigo.py", line 420, in exportMaterial
convertMaterial(mat)
File "/Users/ewa/.blender/scripts/blendigopkg/indigo.py", line 199, in convertMaterial
mat.properties['indigo'] = d
RuntimeError: invalid element in subgroup dict template!