[BUG] Alpha Channel Rendering broken on 1.1.7

[Apollux]

Using the latest Blendigo 1.1.5 (although according to the scrip's Author it is am Indigo bug), whenever you activate the option for Alpha output Indigo would crash at the time of the initial warm-up.

This happens regardless of any other setting on the file, even Bidirectional.

[v_mulligan]

What happens if you add the alpha option to the exported file manually (i.e. by editing the IGS file in a text editor)?