Hi all,

We've resolved this problem. In this case, if you meet same problem, following description can be reference. Thanks for this helpful infomation of LightStreamer below.

If you are usign Java 1.4 or Java 5, your network card needs to actually be connected to a network so that the MAC address can be read. If you are using Java 6 or greater, you don't need a connected network to validate the MAC address.

Again: Try to use Java 1.6 or greater.