I hope W3TC updates soon. In the meantime I disabled the plugin. I was receiving multiple different errors. Namely, in these files:
wp-includes/functions.php on line 3573
wp-admin/post.php on line 197
wp-includes/pluggable.php on line 1228
Not sure about the patch above since it was probably made to address the permalinks error but maybe not the other 2 I experienced. Can’t afford to break the site at the moment!