Thanks for your answer, Elliot. The admin-ajax.php file causes a 500 internal server error? http://cl.ly/SBPr
I just set WP_DEBUG = true and I get this, if I try to edit a widget: “Fatal error: Allowed memory size of 41943040 bytes exhausted (tried to allocate 7680 bytes) in …/wp/wp-content/plugins/codepress-admin-columns/classes/storage_model.php on line 320”
So it looks like it’s a problem with the Codepress Admin Columns plugin. But then I think it’s weird that deactivating either bbPress or ACF solves the problem?
I’m sorry if my problem is not specific to ACF :).
