When I click OK in the 'Add Pages from File...' dialog after selecting a file, the app hangs on the next "Add Pages from File" window with the options:
It does not seem to matter what kind of file I am trying to add pages from, although I have only tested with .afpub, .afphoto, & afdesign ones.
As with other APUB beta hangs ("application not responding" messages), with this one it takes several minutes for Force Quit to actally quit the app, during which time this window is superimposed over everything else on the screen & can't be closed, just moved.