Posting here about Carbonite and QuestHelper isn't going to accomplish anything. The authors of those addons don't post here. Even posting on the pages where the authors do read and post is probably not very useful, either -- do you really think they don't know that many people use their addons and are frantically awaiting updates?
Both addons have been limping along on life support for some time now, though. You should probably just try to find replacements. QuestHelper isn't really useful at all, since many aspects of it are now built into the game, and Blizzard overhauled the quest flow in most areas to be very linear. Use TomTomLite to get an arrow pointing to the nearest quest-related location. Carbonite is so bloated and does so many things that there's not a single addon to replace it (nor should there be) but there are other addons to replace every aspect of it, if you just look around.