[edited from support email]

I am finding that when I make changes in the style file, the changes are not seen when I run the input file. The problem is that picture stimuli stored in my stim file do not align in the centre of the display...they persistently align left. Notably, your samples work and I use exactly the same codes that you used in your sample to centre (loc 0, 0, 1) and in the style editor #1 = Center....however, when I run my programme the picture simulus is centred, but aligns left.