light cache seems to freeze

[lciaccia]

has anyone experienced this?
i'm using skp 8 with vray 1.49.01 and windows 7 pro
when i render using irradiance map as primary engine and light cache as secondary engine the rendering seems to get stuck on the light cache very early on. as soon as i change the secondary engine to something like DMC or something else it renders fine. is this a bug? I would like to continue using the light cache because the images look better but i can't for some reason. this only seems to be a problem with some of my scenes strangely enough but i haven't been able to figure out why.
any one know why?
thanks
L

[thomthom]

Re: light cache seems to freeze

What's your Light Cache settings like?

[fpedrogo]

Re: light cache seems to freeze

I'm wondering if you have semi transparency materials?

[lciaccia]

Re: light cache seems to freeze

its strange because it works on most scenes. i don't change any of the settings when switching scenes. it just decides to freeze a few seconds after the light cache starts.
these are my settings

http://img705.imageshack.us/i/captureutn.jpg/

not sure what you mean by semi transparency materials. i always use transparent materials but in no different way on this scene.

[fpedrogo]

Re: light cache seems to freeze

not sure what you mean by semi transparency materials.

We have one option called transparency on the diffuse layer, if you want to make a semi-transparency material, you could use a gray color on that option instead of the default black color. I ask, because some users have reported the same issue when they use gray colors on the transparency slot for the diffuse layer.

[lciaccia]

Re: light cache seems to freeze

The transparency value in the diffuse layer is not black. which would make sense since its a transparent material. i use the sketchup transparency toggle usually to change this value since they seem to update each other. I still don't understand why it would work in some scenes but not in others.

[fpedrogo]

Re: light cache seems to freeze

The transparency value in the diffuse layer is not black. which would make sense since its a transparent material. i use the sketchup transparency toggle usually to change this value since they seem to update each other. I still don't understand why it would work in some scenes but not in others.

Is your render working fine if you remove the semi-transparency for the materials?

[lciaccia]

Re: light cache seems to freeze

i removed the transparency material but the rendering still seems frozen