Petrah
Psychotic Female
In Jellybean, app encryption was introduced, which is currently preventing icon packs from being applied. Icon pack developers are currently working together with launcher developers to try and find a work around, but as of right now, they will not work. The current temporary work around is to download a pack, make a Titanium Backup of it, uninstall the app, then restore the backup. Then you are able to use the pack. Hope this helps.
Right because I wouldn't see the need to encrypt free apps
In your first post you made a blanket statement where you said no icon packs will work with JB (ie: you did not make it clear that this bug doesn't affect free packs). You also said the only recourse would be for people to root (you need root to use TB) to fix the problem, which is also not the case for unrooted users using free icon packs.
Have to be extremely clear when making statements like that so that there's no confusion.