Update: Did some more testing and found the issue was happening when using Macs and PCs as render nodes with a PC as the main source of the file. If I use only windows machines the alembic pathing works fine, if a Mac node tries to path to the alembic file it apparently won't work, so something is going on with how the Macs are interpreting an absolute path originally made in Windows.

I'm not sure. I looked into renderwin and rendertext and didn't really find anything. Taking one of the machines off the render did fix it, so I'll look into addons and see if anything helps.

If it helps I was running three computers, a windows Alienware as the main computer, and two macs as the nodes, an iMac and one of the trashcan macs. I did some tests and removed the iMac and it isn't crashing now, and even added another windows Alienware and it works fine. Is there anything in the crashlog that shows why that iMac would crash blender on the main computer?