I know this is marked solved, but just wanted to give you an update. I duplicated my child theme with a new name (while trying to troubleshoot a header issue), and I was able to access the built-in Wishlist admin pane fine. But as I was resetting all the Xstore theme options for my site, something broke my access to built-in Wishlist again. I am also unable to access the Built-in Compare section. So there’s definitely a bug with one of the settings. I am sorry, but I was unable to pinpoint what change I made that triggered it.
