Thread: cache loading

when i try and open my client and it downloads the cache
i get this error

Code:

ultimate-pk.zip 11234445
java.io.EOFException: Unexpected end of ZLIB input stream
        at java.util.zip.InflaterInputStream.fill(Unknown Source)
        at java.util.zip.InflaterInputStream.read(Unknown Source)
        at java.util.zip.ZipInputStream.read(Unknown Source)
        at java.io.FilterInputStream.read(Unknown Source)
        at CacheDownloader.unzip(CacheDownloader.java:193)
        at CacheDownloader.unZip(CacheDownloader.java:174)
        at CacheDownloader.downloadCache(CacheDownloader.java:77)
        at client.startUp(client.java:7174)
        at RSApplet.run(RSApplet.java:33)
        at client.run(client.java:4674)
        at java.lang.Thread.run(Unknown Source)

and it just say retrying in 5,4,3,2,1
any one know what this means?