Here is the file with the Matrix between,
I sped it up so you don't waste too much time (60 seconds)
Okay, I see now. You are using the Particle Cache as the source for the Matrix Object, then using the Matrix Object as the source for the Clone and this works on all levels (instance, render instance, multi instance)
I'm sure you checked with the render farm that the abc file is in the folder with your c4d file, correct?
I have yes. It is 100% in the folder with the Cinema 4D project file. I have tried this both by erasing the path and with the Save Projects with Assets command. In both instances the command line render cannot find the Alembic File. I am sure this could be recreated using the Windows/Mac command line render to reproduce the issue. If it is not working on the Linux version, I bet it's not working on all command line versions.
My idea about the Instance not rendering with an abc cache is based on missing data (best guess and my lead to explore an object between that might help here.). The Matrix can generate that missing "whatever, " so I suggested it.
I checked both 2024.4 and 2024.5, and the results were the same.
Thank you I will try this today, my fear is that the Matrix object will also not be able to find the Particle path.
I will file a report, hence my more extended exploration into that, to exclude anything that works. The abc file is the current suspect. But I let the developer decide that.
Thank you for doing this.
If you would like, check with tech support to get a second opinion; sometimes they have solved it already and can give you a quick answer.
https://www.maxon.net/en/support-center
I will do this as my next step.