Opacity with image – Maya crashes

[Anonymous]

In my scene, I want to set material opacity with image texture. But every time I try this, Maya crashes.
It's strange, because in the same scene, this worked perfectly well for other materials...

I use Arnold aiStandardSurface material.

Does anyone know, what the problem could be?
Thanks.

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Maya 2018
MacOS HighSierra
MacBook Pro 13" Retina 2014

[sean.heasley]

Hi @Anonymous and welcome to the community!

Have you tried this with a different material like a Maya standard material i.e Lambert, phong etc?

What are you using for a alpha map for the opacity?

Please come back with as much information and I will see how I can assist you!

[sean.heasley]

Hi @Anonymous

I'm just checking in again to see if you need more help with this. Did the suggestion I provided yesterday work for you?

If so, please click Accept as Solution on the posts that helped you so others in the community can find them easily.

[Anonymous]

Hi.

I just experienced the same problem today. 

I used Arnold and every time I want to set the alpha channel image Maya crashes as soon as I select the image. It is particularly strange as this worked yesterday perfectly well with Arnold. I also tried to set up a new project and restart Mayaetc. but no changes. 

Thanks in advance for any advice.

Best, 

Mica

[Anonymous]

I just solved my problem. The cause of the crash was the  Alpha file itself. I created it with Illustrator instead of Photoshop. I am guessing that the issue could have been the black colour. Illustrator sometimes doesn't save black as true black, so this could have been the reason for the crash. 

Best Mica 

[mspeer]

Hi!

What file type and color space did you use?
Could you upload the image?

[Anonymous]

Hi.

It was a PNG file saved in CMYK (as it was also needed for print) . I cannot upload it as it is part of a Design. But it was just an outline artwork.

I double checked and the black was definitely set to something close to black but not directly black. All resulted from preparation to safe a previous file for print with true black. Might have not been an issue if I had not set the preferences to real black in Illustrator . 

Hope this helps. 

[mspeer]

Hi!

Someone may correct me if i'm wrong, but everything in Maya is based on RGB, so i don't expect CMYK images of any file format to work correct, even if Maya will not crash, the colors will be wrong.

I highly recommend to convert CMYK images to RGB before using them inside Maya.