To start jmulti go to the newly created directory
Black screen issueJmulti starts but I have black areas in menu. Rmathew explains how to remove DirectX-based acceleration for Java 2D completely. Looking for a registry key like:
HKEY_CURRENT_USER\Software\JavaSoft\Java2D\1.5.0_11and setting the value of "DXAcceleration" to "0" fixes it.