Actually, I’m not convinced that the errors on debugging were the problem as I’ve noticed I had the same code in the site that I have got working.
I noticed that the custom field information I’d put in before had disappeared and thought this may have happened when I reinstalled the Advanced Custom Fields plugin and so reentered the first item and then it worked. I did this at the same time as correcting the errors in functions.php. Now I think it wasn’t working before because the data had been deleted.
However, I can now only enter one set of custom field information (so, only one carousel item) in Chrome. If I try to add another set then it takes ages trying to save the changes but never gets anywhere. If I use Firefox I can add a second carousel item in with no problem.
I don’t know if these problems are related.
