Toon Shader and OSL are giving me memory issues

[serepzbn]

Hi! Im trying to render a scene with 190 frames for my thesis project, but ever certain amount of frames (every 48 - 80) frames the pc closes maya and sends me a message about running out of memory.
Im using Arnold 3.1.2. in Maya 2018, Multiple Toon Shaders (6) which 4 have OSL Halftone.
The samples im using are 3/0/0/0/0
Could anyone please help me identify whats the problem?
Whenever I try to see the Log I Cant because maya shuts down completly.
I has happened 3 times.
I will attach the scene down below.
Thanks and have a good nigth!

LINK WITH SCENE

[Stephen.Blair]

Upgrade your MtoA

You're using an older version with a known contour filter problem.

MtoA 3.1.2.1 and later include this:

• Fixed major memory leak in the contour filter (which is used by the toon shader)

You can get the latest MtoA from arnoldrenderer.com/arnold/download