I am getting the following exception when launching JForex (both live and demo):

net.sourceforge.jnlp.LaunchException: Fatal: Read Error: Could not read or parse the JNLP file. You can try to download this file manually and send it as bug report to IcedTea-Web team.
at net.sourceforge.jnlp.Launcher.fromUrl(Launcher.java:484)
at net.sourceforge.jnlp.Launcher.launch(Launcher.java:279)
at net.sourceforge.jnlp.runtime.Boot.run(Boot.java:246)
at net.sourceforge.jnlp.runtime.Boot.run(Boot.java:58)
at java.security.AccessController.doPrivileged(Native Method)
at net.sourceforge.jnlp.runtime.Boot.main(Boot.java:213)
Caused by: java.io.IOException: name can't be null
at net.sourceforge.jnlp.JNLPFile.openURL(JNLPFile.java:309)
at net.sourceforge.jnlp.JNLPFile.<init>(JNLPFile.java:238)
at net.sourceforge.jnlp.JNLPFile.<init>(JNLPFile.java:213)
at net.sourceforge.jnlp.JNLPFile.<init>(JNLPFile.java:198)
at net.sourceforge.jnlp.JNLPFile.<init>(JNLPFile.java:184)
at net.sourceforge.jnlp.Launcher.fromUrl(Launcher.java:453)
... 5 more

Additional info: I got this exception running Icedtea-web with OpenJDK on Centos 6. When I tried it on my Windows 7 development box, I did not get the exception.

I installed Oracle Java 8 on my Centos 6 box and the problem went away. The problem certainly seems to be specific to icedtea-web/openjdk.