In the views_slideshow_menu config area you have to select a menu block or a css selector for the menu. Any one of the following situations will cause a "Can't Complete Script" browser hang when navigating to the view after saving:

  1. The block you've selected is not enabled for the path that the view is displayed on.
  2. Some mistake in listing the css selector. Just some possible mistakes are: confusing an id for a class, misspelling the name, using "class =" instead of "." or simply typing the string without a dot (class) or hash (id)
  3. The menu isn't enabled for the page showing the view.

It would be a lot better if views_slideshow_menu could stop itself and throw an error instead of hanging. Or at least there should be some seriously scary warning messages in the config section saying that if you get the settings wrong you could get this bad result.

Otherwise this is an awesome module.