@elliot how is this going? When can we expect the release? Thanks.
@folbert, you are right, makes much better sense to edit the plugin. i was just too lazy to trace the error.
Happens also to me, three different installs when using relationship fields.
This is not recommended approach, as you should NEVER EVER edit WP core files, but it does the magic:
If you really need it to work, you can edit the function wp_verify_nonce in wp-includes/pluggable.php – just add $nonce = “$nonce”; somewhere in the top.