The readers of this forum are Keynote users and not Apple employees, we have no influence at all in Apple decisions.
Hyperlinks work as they should on my systems and most other users, I have never heard of this issue but I know how such things are very annoying. There are a few teething issues with the latest version of Keynote running on Mountain Lion, as you may have read from the other posts.
The following routine maintenance procedure sorts out many of these problems so it is well worth spending 10 minutes going through the following:
Uninstall all of iWork if you have this, otherwise uninstall Keynote if other iWork applications are not installed.
Use the free application Appcleaner to do this as it will remove the applications properly. It can be downloaded here: Appcleaner Download
empty the trash
Reinstall Keynote or iWork using the original method on purchase using the installer file or installed from the App Store
shutdown the Mac and restart holding down the shift key until the apple logo appears
let the Mac complete the start up procedure completely, it will take longer to start as it is repairing software on the hard drive
go to Applications > Utilities > Disc Utility > First Aid > Repair Disc Permissions
when this is completed restart the Mac normally
Report back on how you got on.
Keynote hyperlinks have always worked exactly as intended for me and all of my clients. Most issues in the past have been due to users inexperience.
I prefer not to use links to other presentations, I can design most of what I need in a single file. It is not a perfect procedure, there can be delays when opening subsequent files but never had problems dropping out of play mode.
A refinment to try is to set the following
Inspector > Document:
Automatically play on open
Presentation set to Hyperlinks only
In preferences: deselect the option; Exit presentation after last slide
No way Gary. Tried you solution but no result, it exits play mode.
I really encourage you to create 2 presentations of 1 slide with an hyperlink on the first one to the second (take care of closing the second keynote file) an see what happens. It will only take you 2 minutes.
I've been using hyperlinks for so long, so inexperience is not the problem. Hyperlinking to another keynote file is a matter of needs only. If it's needed and keynote supports it, why shouldn`t it be used?
I really began thinking as a bug when Apple iWork's expert in the Apple Store wasn´t able to solve it neither on my computer nor in any of the Apple Store. By now, I haven´t found no one that simulates the problem and has made it work.
Thanks for your help.
I managed to track down a 2 week old 21" new iMac last night with Mountain Lion and Keynote preinstalled.
I created 5 Keynote files with a link from presentation 1 to each of the other 4 keynotes and a link back to presentation 1. It worked properly.
I cant think why your having this issue, other than a clean install of the OS and redownloading iWork from Apple App Store, I am out of suggestions.