the reflection map just follows your UV mapping. If you don't have a texture mapped in SU, then you won't have control over how vray determines your mapping. You'd need to add a dummy diffuse layer to control mapping. In your case - I'd put the reflection map in your SU texture, then in vray material editor do the following: add a second diffuse layer under your first material add transparency to your first diffuse layer by specifying a "TexAlpha" material set to white. This will allow vray to apply the UV mapping you've set in SU, while ignoring the pattern in the render. There's more information about this on the ChaosGroup forum if you need: http://forums.chaosgroup.com/showthread.php?62274-Texture-placement-workaround-for-SketchUp

@massimo said: Buy some of these (check the "wood floors" and the "wood boards") and you'll be a happy man. You will receive as a gift some nice scratches&dents bump maps. Okay, thanks, I will check them out...

be aware that using displacement means that you are asking vray to subdivide your faces for you if they are something other than quads (more than 4 vertices per face.) You will see such triangulation artifacts if you are not careful to draw interior lines so you end up with more "square" planes on your face.

There been some suspects that if both vray for SU and Thea for SU are installed there is change for a crash (maybe observers do not play well). Anyhow... about the crash, you really should post a detailed bug report at Thea forums (if you not already have done so); used software version (su, thea & vray..., os, hardware specks, gpu drivers and so) so that Tomasz can take a look on this. http://www.thearender.com/forum/viewforum.php?f=82

Might have to sync materials.

like this? http://www.4dvirtualbuilder.com/

Seems that Andy is correct, you can just right click it and make it a component. Glad to see this is working now.

You must have Show Samples turned under Irradiance Map. Turn it off

The weird thing happened that my vary proxy item turn transparent in the render image. I though there is no way to edit the proxy item in the vray material editor. Since the proxy is just fragmented polygon floating in air. It will be nice if it's true.

Could be a million things. We need more info man. Version of SU, version of VR, is it a large file with displacement and proxies, etc etc. Most likely you are running out of memory.

I was supporting your statement about OBJ. OBJ is my preferred format too. I've imported 3DS before and it often contains too much geometry and takes longer to import compared to the cleaner OBJ version. 3DS often has errors too, as you clearly illustrated above.

Many thank for all ! It's just what I needed

@alexandre sk said: I think it's the displacement map. in general options disable displacement to try. yes! that did it! thank you very much

@orei said: Hi my friends, i've a question for you.. i'm a noob.. and i can't understand why have theese artifacts in my render. The texture over the wall is only one.. but how you can see isn't uniform.. and.. the reflection over the car give some problem. i use standard vray options for external, MAXIMUM LEVEL.. so.. for hq image.. but nothing change.. thanks my friends!! try checking sub-pixel mapping in the color mapping rollout. it usually does the trick for me.

If you see it stall out like that, it's likely that the XMLDRSpawner is frozen or has crashed. This needs to be running in the background, in order for RT to work properly. You can check that by looking in the task manager on Windows, or the activity monitor on OSX. I would suggest killing that process and then running it again, just to make sure that it's not frozen.

Actually, If you have SketchUP 2014 (or an educational version), you can purchase an educational trial of VRAY for SketchUP from Novedge, here: http://www.novedge.com/p/8841 It's $138, compared to the $700+ commercial version. Good luck!

... that looks like an email from v-ray.com? Am I correct? That isn't the company that makes V-Ray for SketchUp, they're a reseller.

I'm not saying there's no workaround - it's just that this effects regular groups in a model, not just when you make a proxy. I think best practice when modeling is to not add material properties to top-level groups, only low level groups or faces only.

In my very honest and humble opinion, 1.49.01 is just not a great rendering plug-in. 2.0 and moving forward is where you want to be. Stop killing yourself with that bug-ridden version and update as soon as you can!