I noticed an issue with my older scenes, especially at the final render stage. When I kept my presets with MID or Z passes enabled, the render would crash. Since then, I’ve only been getting errors and crashes in the Live Viewer, but with a bit of patience, I’m managing to keep going on this project.

Hello, I’m having a small issue after reopening my scene that was created with a 2025 version. I’m experiencing slowdowns and occasional crashes. The log shows several errors, and I would like to know how to fix or rebuild the materials that are causing the problem.
Here is a copy of the log ...

Good morning,
I would like to order a mask amount of a mix material using an xpresso but the live viewer does not update the material.
The modification is only visible if I restart the rendering.
Is there an option to update this?
Indeed, the xpresso user data is injected into the octane material ...