Any help?

If anyone can help it'd be appreciated, getting this error when I try running my client.

The cache is in the right place as far as I know, my user folder just like any other cache.




As well as getting this error in Eclipse.

Error: loaderror Unpacking data... 249
java.lang.NullPointerException
at Client.repackCacheIndex(Client.java:8680)
at Client.startUp(Client.java:8426)
at ClientEngine.run(ClientEngine.java:222)
at Client.run(Client.java:5495)
at java.lang.Thread.run(Unknown Source)