This of course was the same experience I “enjoyed” when I opened Keynote on the iPad the first time in July, 2010, again with the hope of full compatibility.
I did this too, only to watch a shopping list roll down before my eyes, of missing builds replaced by a default “dissolve”, missing transitions – ditto – and missing fonts.
Indeed, some expected they could open their existing and in some cases very complex Keynote 5 files and expect them to somehow be transformed magically into something ethereal. I write “initial” because for many, to judge from Apple’s own discussion support groups, and others on Yahoo, this update feels retrograde, with too many existing elements cast out, and insufficient hoped-for new features added. Much to many Keynote presentation software users’ initial delight, Keynote 6 was announced, almost five years after the last significant update. It’s now been a few days since the October Apple keynote announcing new products and services.