I have this problem where quest markers won't show up with my Objectives. The text still appears, but not the directions. I've looked this up, and there are a lot of people with the same problem, and many of them are just doing the Bendu Olo quest. I've uploaded my file and had a friend look at it, and he says he spent hours looking over my mod and could find no reason why my markers shouldn't work, but they don't for him either.
I'm wondering if maybe this is a bug. I'm re-installing my skyrim and creation kit to fix an unrelated error (the problem where NPCs won't speak) and I'm hoping this fixes the problem (but it probably won't). The other thing I'm gonna try is finalizing the NavMesh to see if it helps.
Otherwise I'm gonna have to give textual directions like Morrowind quests. Which is kind of cool for flavor anyhow.