I would have some suggestions, too.
1. Change "Blend map" in "Blended material" to a relative path. (Like other albedo maps)
2. A file selector for nkdata. (not only a text field, could take only the filename without a path)
3. A textfield to expand the execution code for indigo. (for parameters like "-n wm" in case of "no GUI")
4. Could you call the rendering of a material preview with it's own function? (I have the "-n wm" in the execution code for the indigo_console.exe. Gives a problem in material preview rendering)
5. could you rename the "transparent" to "transmit"? ( in Diffuse material settings)
thanks for your great work on the blendigo script.
