Arrows shoot by dispenser dont get afected by gravity

[Hypermegazord]

Hey!

When a dispenser shoot a arrow on the moon, the arrow dont get affected by the gravity...

Your game type (Server or Client): Client
Your Galacticraft Version: Alpha 0.0.3
Minecraft Version: 1.4.7
Minecraft Forge Version: 6.6
Error Report (if applicable): No
The game mode the bug occured in: (SSP/Survival Single Player, SMP/Survival Multi Player, CSP/Creative Single Player or CMP/Creative Multi Player): SSP/CSP