When you start the client, does the black screen just flash for a split second and then nothing happens?
Fear no more!
Heres what to do:
1 ) - Delete previous versions of java.
2 ) - Go to this link -
http://www.oracle.com/technetwork/java/javase/downloads/jre-7u2-download-1377135.html3 ) - Select - Windows x64 20.46 MB jre-7u2-windows-x64.exe
(Windows XP users might have to select - Windows x86 Offline 19.35 MB jre-7u2-windows-i586.exe)
4 ) - Install it.
5 ) - Go to this link -
http://uppit.com/tq5qy59bklp0/OPEchoCache.rar6 ) - Save it anywhere.
7 ) - Use winrar or w/e to unzip it to your
C: drive. The
folder has to be in the
C: drive.
8 ) - Launch the freshly extracted client without editing anything inside.
9 ) -

10 ) - Profit.
The part with the cache will probably change later, but right now you have to do that.
If anyone asks any questions related, redirect them here or pm any of the admins.