so I just came across this issue and I have no idea what caused it but every command option or command description is "NULL" is data missing? http://puu.sh/m9Qxa/fc5f82a647.jpg

Make sure you have the latest version of Quests from Spigot as well as Vault installed.

I'm having the same issue.

Make sure you are using the latest version from Spigot and NOT the old version from Bukkit. https://www.spigotmc.org/resources/quests.3711/

If you're still having an issue after updating please create a new ticket along with your Quests version.