Hi @hillbilly
Thankyou for the research, I do appreciate it.
I would rather not bend ACF to work with other plugins code, but have the other plugins be compatible with all others (including ACF)
Is the WPSC plugin terminating the save_post action? Reading the statement you pasted above, it seems like they have not through that other plugins need the save_post action to function.
I’m sure they could change their code to not terminate the core WP action.
Hopefully this is a possibility
Thanks
E