[PyMOL] `set grid_mode, 1` not working on a pml script?

[Francisco M. P. <fra...@ib...>]

Dear all
Got this script

```
load ./1ema.pdb
load ./1emg.pdb
set grid_mode, 1
png picture.png, dpi=300, width=1920, ray=1
```

When I try to run in a linux terminal `pymol script.pml` I get no grid.
When I try the same lines with pymol opened, I get a grid.

What's going on?

Thanks a lot!!