i try making h5 server, when i click registergameserver it opens then close..., when i click in loginserver or gameserver it opens then comes with error... i need to press enter... any ideas please?

Oh god.. Show a pic, or what is says... I guess you don't have the correct name/pass of your database..

i dont know what it says for registergameserver it opens then close quickly, but for loginserver it shows this:

"exception in thread "main" java.lang.unsupportedckassversionerror: com/l2jserver/loginserver/l2loginserver : unsupported major.minor version 51.0...

There is more but i wont write everything down, hope this helps

http://www.java.net/node/664117