Thanks Johnny..
I have tried RGB jpegs and PNGs (I’m rendering from 3DsMax). I’m getting close. If I drag the folder into AE it creates a sequence and says 1280×720 (1.00) 30fps. I am working in a 25fps comp, could this be why?
If I drag the image sequence onto ‘create a new composition’ I have no problems because the new comp is 30fps.
How do import an image sequence as 25fps?