I'm getting this really weird crash when spawning my entity: http://pastebin.com/QGRdqDb5 . Just note that I have absolutely no experience with entities, so... I don't exactly know what I'm doing Any help is appreciated!

Relevant code:

Main class: https://github.com/austinv11/PeripheralsPlusPlus/blob/master/src%2Fmain%2Fjava%2Fcom%2Faustinv11%2Fperipheralsplusplus%2FPeripheralsPlusPlus.java

Entity class: https://github.com/austinv11/PeripheralsPlusPlus/blob/master/src%2Fmain%2Fjava%2Fcom%2Faustinv11%2Fperipheralsplusplus%2Fentities%2FEntityRocket.java

Client proxy: https://github.com/austinv11/PeripheralsPlusPlus/blob/master/src%2Fmain%2Fjava%2Fcom%2Faustinv11%2Fperipheralsplusplus%2Fproxy%2FClientProxy.java

Give us the full crash report.

That's literally all there is, but if you wish: http://pastebin.com/DJGtcrgG

How are you spawning it/ code?

Here: https://github.com/austinv11/PeripheralsPlusPlus/blob/master/src%2Fmain%2Fjava%2Fcom%2Faustinv11%2Fperipheralsplusplus%2Fitems%2FItemRocket.java#L20

Dang it, you got here first diesieben

Makes sense, but how would the createEntity method look?

Ah, thank you!