Slick2d Error with multiple instances

Engines, Libraries and Tools
#1

Hello guys,

I start my appgamecontainer from a gui, after i close the game and i wanna start another appgamecontainer from my gui i get this error:

java.lang.UnsatisfiedLinkError: org.lwjgl.openal.AL10.nalSourcef(IIF)V
	at org.lwjgl.openal.AL10.nalSourcef(Native Method)
	at org.lwjgl.openal.AL10.alSourcef(AL10.java:810)

You guys experienced this error before?