The problem is the client did not get installed properly. It looks as though the client broke on instalation. I suggest this.
First Install OS client
shaiya.aeriagames.com . Then download just the updater and client
megaupload.com megaupload.comSAXD2TUL Extract these files into the OS client folder and run the updater. Be sure you select replace when it ask you.
Some people have been haveing problems with the split zip breaking when it is downloaded.
My skype is russell0659 add me if you need help, ill be glad to give you a hand.