I'm using the latest version of the lightstreamer server which is 7.2.1, and the latest Java SE Client SDK which is version 4.3.5,
when I try to create an instance of LightstreamerClient

myClient = new LightstreamerClient("", "");

I'm getting a strange exception says:
​"Exception in thread "Prices Connector Thread" java.lang.NoClassDefFoundError: com/lightstreamer/log/Logger" Caused by: java.lang.ClassNotFoundException: com.lightstreamer.log.Logger
I have added the required library to my project (ls-javase-client-4.3.5.jar), and I have opened all jar files to check if this class is available but I didn't find any class.
Any help????