Don't give up! We believe in you! :D To help lift those shadows from full black, you could try changing the Environment Colour (View > World Properties > Lightmass > Environment Colour) to more of a blue colour. As well as this you might want to try increasing the bounce light intensity around your environment (View >…
Aww, thanks @ladyknowles :) With regards to your problem, the Lightmass section on the UDN has some good information on Translucent Shadows. Although it is not entirely clear... ... Looks like the colour and intensity of the shadows from your windows would be derived from the Diffuse and Opacity values (and not the…