Hi ragan !
First, i want to say that: quester is really awesome. I have more than 70 quests on my server.
But (yes unfortunately) i've a serious issue with the latest version working with MC.1.7 (quester 0.7.0 snaphot). I'v tried to fix by myself this issue but i can't find the problem:

http://pastebin.com/Z6Bn3Y7R

There a few days, quester works perfectly with this craftbukkit but... now i've this issue with the SAME craftbukkit (craftbukkit-1.7.2-R0.2).
More precisly: i've the issue with and without the quester folder (just the .jar), so it's not a configuration error.
Quester is very important for my server.

Hotfix for this issue has been released some time ago and can be found at the bottom of the quester's main bukkitdev page.