Add new connection error in SAP GUI Java

Hi,

I have been using SAP on Windows. Now I am using Linux (Mint) so I installed SAP GUI Java for Linux. First I installed PlatinGUI730Linux_4.JAR but had problem with creating connection so I removed it and installed PlatinGUI730Linux_6-20008877.JAR . However I am still unable to create connection. Here is the screen shot, except Description nothing is editable.

Java Version Details :

$ java -version

java version "1.7.0_45"

Java(TM) SE Runtime Environment (build 1.7.0_45-b18)

Java HotSpot(TM) 64-Bit Server VM (build 24.45-b08, mixed mode)