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Yes, this is unfortunately now a known compatibility issue occurring with all Adobe Touch apps running on tablets that use the Android 4.0 operating system (Ice Cream Sandwich). You will not be able to sign in to the Adobe Creative Cloud from within any of the Touch Apps (Collage, Debut, Ideas, Kuler, Proto, Photoshop Touch).
New updates of each Touch App, addressing this issue, will be available soon. Signing in to Creative Cloud from a browser (on mobile and desktop) is not affected.
An announcement will be posted as soon as the updated apps are available. We sincerely apologize for this inconvenience.
Thanks very much for posting.
A new version of Adobe Kuler 1.1.0 is now available on the Android Market. This free update includes a fix for a problem with sign in to the Creative Cloud from tablets running Android 4.0.
You can find the update here: