If I am behind a Proxy, how to download the execution files?

You need to configure Java Web Start's proxy setting so that the Java Web Start system can download the CrossFTP execution file through your proxy. Normally you do not need to setup this since the Java Web Start system can automatically detect your system's default proxy. If the proxy is not properly detected, please use the following approach to change your Java Web Start's proxy setting:

Please start Java Web Start or run javaws -viewer in command line. Change the Java's proxy configuration by going Edit-> Preferences -> Network Setting.