I couldn’t see event-list-cal as an ID, but as a class so I changed
$('#event-list-cal table').attr('id').split('-')
to
$('table.event-list-cal').attr('id').split('-')
which works for me.
Thanks for your help. WordPress newbie here – will get in touch with the creators of the theme.
Thanks for the reply.
I previously tried deactivating all the plugins (and removing them) to no avail.
However, just tried switching the theme as you mentioned to Twenty Eleven and I’m able to add tags/images now.
I’m guessing the theme is not compatible with the latest WordPress update?
Many thanks