I've been messing with a few things with my quest today (i've been changing the quest log entry in Quest Stages and deleted the objectives to add some new ones)
and my quest just disappeared from my save game I had enabled it and the actor responsible to start the quest do not start the quest anymore.

Any idea how to fix this? I can't even talk to anyone who could give me the quest and it used to work just fine before these changes.


UPDAAAATE:

I created a new quest and the dialogue worked just fine.
Now I know it's not the creation kit or a corrupt save, it's something I did... but is it possible to save my older quest?
I've been putting a lot of work to record all the voices I've used in this video
http://www.youtube.com/watch?v=hyf7aSE7wOs&feature=player_embedded

Please :C
I have a lot of voice actors waiting for my quest to be released!

I'll send pics and files if necessary.

I deleted my Quest Stages, the issue still persist. So I guess it doesn't have anything to do with it. Maybe it just broke by itself too... any tips helps!

Have you tried the save-reload to see if it is the Dialogue bug?