Chunkster Error

D:\Minecraft\backups\Aug24>java -jar Chunkster.jar world
[Chunkster] Starting scan...
[Chunkster] REGION LOAD world\region\r.-1.-1.mcr
[Chunkster] Scanning region file x=-1 z=-1 file=r.-1.-1.mcr
[Chunkster] REGION LOAD world\region\r.-1.-2.mcr
[Chunkster] Scanning region file x=-1 z=-2 file=r.-1.-2.mcr
[Chunkster] REGION LOAD world\region\r.-1.-3.mcr
[Chunkster] Scanning region file x=-1 z=-3 file=r.-1.-3.mcr
[Chunkster] REGION LOAD world\region\r.-1.-4.mcr
[Chunkster] Scanning region file x=-1 z=-4 file=r.-1.-4.mcr
[Chunkster] REGION LOAD world\region\r.-1.-5.mcr
[Chunkster] Scanning region file x=-1 z=-5 file=r.-1.-5.mcr
[Chunkster] REGION LOAD world\region\r.-1.0.mcr
[Chunkster] Scanning region file x=-1 z=0 file=r.-1.0.mcr
[Chunkster] REGION LOAD world\region\r.-1.1.mcr
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: -5310530
        at java.util.ArrayList.elementData(Unknown Source)
        at java.util.ArrayList.set(Unknown Source)
        at chunkster.RegionFile.<init>(RegionFile.java:132)
        at chunkster.Chunkster.scanRegionPointers(Chunkster.java:54)
        at chunkster.Chunkster.scan(Chunkster.java:48)
        at chunkster.Chunkster.main(Chunkster.java:27)

D:\Minecraft\backups\Aug24>pause
Press any key to continue . . .