Steamloader: Fatal exception occurred

java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
	at java.lang.reflect.Constructor.newInstance(Unknown Source)
	at steamloader.SteamLoader.loadGame(SteamLoader.java:135)
	at steamloader.SteamLoader.<init>(SteamLoader.java:38)
	at steamloader.SteamLoader.main(SteamLoader.java:27)
Caused by: java.lang.UnsatisfiedLinkError: C:\Users\Sarah\AppData\Local\Temp\steamworks4j\7688aeac\steamworks4j64.dll: Der Prozess kann nicht auf die Datei zugreifen, da sie von einem anderen Prozess verwendet wird
	at java.lang.ClassLoader$NativeLibrary.load(Native Method)
	at java.lang.ClassLoader.loadLibrary0(Unknown Source)
	at java.lang.ClassLoader.loadLibrary(Unknown Source)
	at java.lang.Runtime.load0(Unknown Source)
	at java.lang.System.load(Unknown Source)
	at com.codedisaster.steamworks.SteamSharedLibraryLoader.loadLibraries(SteamSharedLibraryLoader.java:77)
	at com.codedisaster.steamworks.SteamSharedLibraryLoader.extractAndLoadLibraries(SteamSharedLibraryLoader.java:188)
	at com.codedisaster.steamworks.SteamAPI.init(SteamAPI.java:14)
	at com.codedisaster.steamworks.SteamAPI.init(SteamAPI.java:8)
	at content.i.a(SourceFile:70)
	at content.Launcher.<init>(SourceFile:43)
	... 7 more