Crashing Issue

[Evangelynn]

Sorry if there was a fix posted for this crash log already, I tried searching but couldn't find one just like it. My cousin's game keeps crashing and giving him this, any ideas?

at com.jcraft.jorbis.CodeBook.init_decode(CodeBook.java:321)
at com.jcraft.jorbis.DspState.init(DspState.java:178)
at com.jcraft.jorbis.DspState.synthesis_init(DspState.java:216)
at dolda.xiphutil.VorbisStream.<init>(VorbisStream.java:98)
at dolda.xiphutil.VorbisStream.<init>(VorbisStream.java:117)
at haven.Resource$Audio.pcmstream(Resource.java:1248)
at haven.AudioSprite$ClipSprite.<init>(AudioSprite.java:71)
at haven.AudioSprite$1.create(AudioSprite.java:49)
at haven.Sprite.create(Sprite.java:112)
at haven.Gob.ctick(Gob.java:114)
at haven.OCache.ctick(OCache.java:68)
at haven.Glob.ctick(Glob.java:190)
at haven.HavenPanel.run(HavenPanel.java:437)
at java.lang.Thread.run(Unknown Source)

We are using the game client (we're at work, so can't use the custom clients), and have also been having a weird glitch where things keep turning all white. Any help would be appreciated!