I've just followed a Misc quest to learn a new dragon shout; upon finding the word wall there does not seem to be a word there so I cannot learn it.

It performs the animation of the word leaving the wall but just never finishes so I cannot learn the should or end the quest.

Has anyone else experienced this before and if so is there anything I can do?

In the mean time I will just leave it and return later in the hope that it will work then.

Better to reload a save from before you discovered this wall.

Running any mods?

I have had this happen in an unmodded Game due to a conflict with a Drain Vitality and Marked For Death, but I have had a similiar issue with a Mod that moved Word Walls, I can always get the Mod added Word Wall to Work by getting a Word in the Shout from another Dungeon.

May http://www.uesp.net/wiki/Skyrim:Word_of_Power#Bugs help you.

It happens alot with the word wall at Arcwind Point. What happens to me is I've already went and gotten that shout at some earier point. Then the Greybeard leader will send me there to get a word. But since I've already gotten that word, I can't get it again so I can't finish that quest.