items-to-deliver:
      - name-redstone:amount-3
      - name-glowstone:amount-1

Is there something wrong here
Console said that item-delivery not formatted properly
Using latest Quests version on Spigot 1.7.10
Vault 1.4.1

Please post the actual Quests version and error ("latest" is not sufficient as you may be using a dev build).

I tried editting abit and seems like it work but then something changed and got worse which is i got errors compare to just item-delivery not formatted properly error

Im using Quests 2.4.0

Here's my quest: http://pastebin.com/BXHe2JrS

I suddenly got this error after reload
http://pastebin.com/Q9Gzytzf

I updated to Spigot 1.8.3

I got this small error instead
http://pastebin.com/n2Ah4zGy

Sorry for the late response. I would suggest remaking the quest if you haven't already.