trying to run from terminal with additional info shows that there is exception:
$ javaws ./wurmclient.jnlp -verbose
Exception in thread "main" java.lang.NoClassDefFoundError: Could not initialize class java.lang.ProcessEnvironment
at java.lang.System.getenv(System.java:897)
at java.awt.GraphicsEnvironment.lambda$getHeadlessProperty$0(GraphicsEnvironment.java:178)
at java.security.AccessController.doPrivileged(Native Method)
at java.awt.GraphicsEnvironment.getHeadlessProperty(GraphicsEnvironment.java:164)
at java.awt.GraphicsEnvironment.isHeadless(GraphicsEnvironment.java:141)
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1941)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1824)
at java.lang.Runtime.load0(Runtime.java:809)
at java.lang.System.load(System.java:1086)
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1941)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1845)
at java.lang.Runtime.loadLibrary0(Runtime.java:870)
at java.lang.System.loadLibrary(System.java:1122)
at java.awt.Toolkit$3.run(Toolkit.java:1636)
at java.awt.Toolkit$3.run(Toolkit.java:1634)
at java.security.AccessController.doPrivileged(Native Method)
at java.awt.Toolkit.loadLibraries(Toolkit.java:1633)
at java.awt.Toolkit.<clinit>(Toolkit.java:1668)
at com.sun.javaws.ui.SplashScreen.hide(Unknown Source)
at com.sun.javaws.ui.LaunchErrorDialog.show(Unknown Source)
at com.sun.javaws.Main.main(Unknown Source)
