What are your environment settings? I would think its a light leak issue. Have you tried to model something above you ceiling to close it in and prevent direct light from hitting it?

I can confirm that on build: 2.00_23706 there is an issue. I tried to regenerate all materials and reset all material and render settings and it still renders blank. I copied and pasted it into a new scene and it seems to be fine after that.

One more material here that I use sometimes. This uses a lot of artistic license, but sometimes you just want a glass material to appear 'glassy'. This is a cheat that does not use Fresnel and is not fully transparent. It's a nice cheater.

ThinCheatGlass.zip

Also,

Don't use emissive materials to light your scene. I suspect that is how your recessed cans are setup? Emissive doesnt work the same way a V-Ray Light Material works in Max. It can only be used as a way to make a material 'look' lit.

In order to light an interior you will need some interior light sources or you get these splotches. I think most folks add IES lights combined with some rectangular lights in front of the windows to toss in some lighting. Fernando did a nice interior tutorial on Youtube.

Try ticking Clamp Output on.

I would argue that changes are easier in Photoshop than having to re-render a scene in VR. Esp if it is going to have atmospheric effects. Deven has said this is on the list for the next release, so you will most like get your wish.

The most important thing to do with a PS file is make everything non-destructive and adjustable. I never use dodge and burn because if you have to make an edit to the base render, your basically starting that process over and you will never get it the same. Instead I use adjustment layers for all edits like this.

I'm not sure what version of 2 that you have but there have been some issues that have been fixed. I would talk to Chaos about getting a copy of this nightly and see if it solves your issues. I have not come across any issues with missing geometry in this release.

Cool VR4SU 2.0 Tutorial on Ronen's Site

http://www.ronenbekerman.com/making-of-mediterranean-house-nookta/

Nomer get's into a technique on his website.

http://www.sketchupartists.org/tutorials/sketchup-and-photoshop/use-image-editing-software-inside-sketchup/

You can also use a single plane for the glass with a thin glass material. I've attached one that I use sometimes.

ThinGlass.zip

Nomer has nice resources on his site as well.

Vray Sketchup Glass Material

Thanks to Jonathan Ignas for sharing this beautiful glass material. Check this out.  Here are the sample render using this material.

(sketchupvrayresources.blogspot.com)

Turn off GI (skylight) - All you need is the domelight. That's probably the issue.

If your glass is a single plane, you want to give it some thickness, like .12 and use a standard glass material. I have attached one, but if you are not using v2.0 it might not load correctly.

glass_basic.vismat

A trick I use is to be sure to place each ID material to one of the proxy triangles. This way it is seen as used and will not purge and it also stays along with the component.

Beware that purge plugins will also purge materials that are used as part of a 2-sided material. Chaos recommends using the purge material feature inside the material editor.

V-Ray for SketchUp Freelancer Special Pricing http://www.chaosgroup.com/en/2/freelancer_promo.html

A+++ This is fantastic. I can't tell you how many times I setup each of these passes on the fly.

Is there any way (without a rendering engine) to export a hidden line view as a spherical camera? I know this can be accomplished with V-Ray and a toon shader, but I am looking for an faster and easier way.

Honestly, the best way to achieve what you are looking at in that photo can be done 2 ways. 1. Map a large scale map of the brick with the staining applied to the texture
2. Just add the grunge in post

Here is a great resource for grunge textures
http://www.cgtextures.com/

If you are using the demo, I believe it has a size limitation.