Problem with nodes in Maya - object turns black

Escapist

Hello everyone!

I hope this is the right section in the forum for my question. If it's not, please let me know.

I am still very new to this, so please consider you are explaining to a noob. ^^

So... my problem is the following:
I am trying to create an eye following a tutorial and everything was fine until I started working with the nodes for the materials in Maya + Arnold (2017) + alShaders. I created a mask (as a texture), which should make the cornea of the eye transparent above the iris. However, when I connect the nodes (as shown in the pictures below), the entire eye turns black (something like a silhouette).
What am I doing wrong? Please advise. Also if you need more information, please let me know.

Best regards!

throttlekitty

That should work for at least getting a color though it may get confused by shader passes being mixed in. Try replacing blendColors with a layeredShader, and attach your mask to the top layers transparency (these nodes work left to right, left is top).

Escapist

Still the same sadly.

Here is what's happening with both surfaceShader and layeredShader.