ACF Pro 5.7-RC1 - Cannot choose image

[wonkeythemonkey]

I am testing the ACF Pro 5.7 release candidate. I find that I can add an "Image with user-crop" field and that it will display in the page edit screen, but when I click the "Add Image" button nothing happens.

I suspect this is related to the major JavaScript changes between ACF Pro versions 5.6 and 5.7.

[wonkeythemonkey]

More details: I checked the console when I clicked the button, and the message was:

Uncaught TypeError: acf.get_field_key is not a function
    at Object.add (input.js?ver=4.9.6:56)
    at HTMLAnchorElement.<anonymous> (acf-input.min.js?ver=5.7.0-RC1:4)
    at HTMLDocument.dispatch (load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable,moxiejs,plupload&ver=4.9.6:3)
    at HTMLDocument.r.handle (load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable,moxiejs,plupload&ver=4.9.6:3)

I'm guessing that acf.get_field_key was deprecated.

[mikeaskew4]

Not sure if this was answered somewhere else, but I have the same issue.