I've figured it out, thanks everyone for the help.

In Fryrender I can achieve single glass by using the ghost glass as cadmunkey mentioned.

To change the colour of the glass I used layers, it seems everything not basic in fryrender is achieved with layers.

If there is such a thing in Indigo I am guessing that is how it would be done as well.

Thanks a lot guys, I now understand it all.

Real renderers like Indigo and Fry will not render the faces properly.

but I have not been able to find the thin glass equivalent of Indigo.

btw I think in Indigo,how do I change the colour of the thin glass

I don't think I was ever able to do it.

Thanks.....For that.

This is what I find strange, it seems few people use Fryrender, even though the quality is far better than many of the render engines I have used.

It has a better quality than

SU Podium
Kerkythea
Artlantis
Hypershot
Indigo
IDX Renditioner

I haven't used Twilight or a few others

but the only ones I can think of with better or equal quality are maybe Maxwell and Vray.

**Does anybody here use Indigo? because it is the same issue I had with Indigo

I can render double faced (close geometry) glass, but not single faced.**

Here is the Model

Thanks for your assistance so far.

I am really grateful.

Model Attached

All Glass in the Model is one faced

Except for the Balcony Glass Which is two Faced.

Is that the problem?

I will try post the model without all the extra stuff so that it is 4mb

but that's the thing I don't have back faces.

Before I any of my faces, I always reverse them so that they are all white.

I don't know what is happening.

This is the same reason whay I stopped using Indigo.

This is the Monochrome style like you suggested

I tried to render coloured Glass, I edited the parameters as I saw fit, then when I realised that maybe I had no clue what I was doing, I used the presets.

but it didn't make a difference.

How can you go wrong with the presets.
No Matter what I do, no matter how much I change...the Glass is BLACK

PLEASE HELP