So I was setting up a little fireworks show at my res and used a clock but it wouldn't work so I decided to add a current to the dispenser and it worked. Is this supposed to happen?
I think you just made the timer wrong. Or Aikar Made it so you cannot have a timer hooked up to a dispenser because the fireworks are creating too much lag.
The redstone doesn't update, and it suggested that you use something that is better than a simple repeater clock. Maybe a torch clock? I have on SMP4 works fine, just getting the right delays