admin-ajax.php: c.handler.apply is not a function

Hi all,

According to firefox site inspector, my load-scripts.php gives an error during loading of admin-ajax.php: “TypeError: c.handler.apply is not a function”.

This function is needed when the edit page needs to be refreshed after selecting an image from the image library. This does not work, and it is never visible that an image is selected.

I do not like messing with core wordpress files, so before digging into that I’d like to ask you guys first. Is there a solution for this problem?

Thx all!