Hello Everbody, this is my first topic.
IDK why but my jetpack dont works, any way on my world. I tryed to get the jetpack from NEI, from Creative mode, and doing myself on a survival game. Any jetpack dont works. (Batpack, Jetpack)
Minecraft Version: 1.5.2
IC2 Version: industrialcraft-2_1.117.921.jar
Mods i'm using:
I need help fast possible, thats making me stop playing Minecraft with my friends 
Sorry for my English, i know its really bad xD
I'd be glad to help, but you're using an "ancient" version of industrialcraft.
Not much i can do other than telling you to update your mods to a more recent version of them (including industrialcraft), preferrably for MC 1.7.10.
I literally didn't expect anyone to still be on 1.5.2. Maybe 1.4.7, but never 1.5.2.
With your rocket pack try jumping then press and hold spacebar in the air, your rocket pack should activate, try it out and if I doesn't work then I have no idea how to help you with this issue
