[PyMOL] Trying to make movie - moves on screen but can only save a single frame

[Sean Smith]

Hi,

I would like to make a movie in PyMol based on "mset 1 x60" followed by 
"mdo 1: turn x,3; turn y,5;" but whereas this makes a rotating molecule 
on-screen, exporting to PNG files yields only a single file. Is this normal?

Thanks,
Sean