Another one here. IDK what happened as I wasn't interacting with anything when it broke.

The mod FactorioChem (1.0.1) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event FactorioChem::on_tick (ID 0)
Unknown item name: molecule-Be|1Li
stack traceback:
[C]: in function 'set_stack'
FactorioChem/control/entity.lua:372: in function 'update_building'
FactorioChem/control/entity.lua:270: in function 'update_buildings'
FactorioChem/control/entity.lua:660: in function 'entity_on_tick'
FactorioChem/control.lua:25: in function <FactorioChem/control.lua:24>

I think I have isolated it to the complex molecule in a bonding machine. It was sitting idle and full. When it tries to work, be deconned or anything really, it crashes.

Looks like it didn't catch the fact that a molecule was supposed to be a complex molecule, I'll look into why not

Ah I see the issue, the caching system that it uses on reloading a save doesn't properly re-cache products for reactions that are already in progress when the save is loaded

BTW, loving the mod! Great idea and implementation. I know there will be a few kinks to work out here and there, but I am willing to be the guinea pig as long as you are willing to work on it. Keep up the good work!

Glad you like it!

Fixed in 1.0.2