Here's a weird one...
I'm on Mac Os Mojave, using Affinity Photo 1.8.3.
I have 165 png files (256x256 px) to process. The result is it saves the 1st file, but not the other ones. They are named like this:
I've first created a macro, that I've applied in the batch job window, "save into" another folder than the source, and I've checked "Save as PNG", unchecked "Save as AFPhoto". Parallel processing is also checked.
When I hit ok, only cubase.png is saved.
However, when I've started over, and didn't include "cubase.png", and just added cubase1.png to cubase164.png, after having repeated the steps described above, none of the files have been saved.
I wanted to check if it was related to the way the files are named eventually, but no. I've copied a few files from the serie, renamed them as follow:
Same result as the 1st try; it only processed and saved "cubase.png", none of the others.
I've started thinking there was a problem with these files. So I've tried to batch process them with another software. I've used a little app called PhotoResize. I've just resized them to 255x255, and hit "resize all". It worked!
Then I went back to Affinity Photo, and tried again the batch job but using these new files. And then it worked.
So, why Affinity Photo struggled processing these files, as a simple tool managed to do a process and save them all?
I'm happy to send you these files so you can check what blocked AP to process them if you guys want.