[U-co] error jnlp

[juan manuel espalza mora]

Cordial saludo

hola a todos tengo un problema estoy programando en Netbeans y todo
funcionaba de maravilla y sin errores, pero de un momento a otro dejo ya no
me ejecutan los archivos  jnlp me salen los siguientes errores... a los
usuarios que manejan la aplicación con Windows les funciona perfecto

primero:

net.sourceforge.jnlp.LaunchException: Fatal: Initialization Error: Could
not initialize application.
at net.sourceforge.jnlp.Launcher.createApplication(Launcher.java:778)
at net.sourceforge.jnlp.Launcher.launchApplication(Launcher.java:552)
at net.sourceforge.jnlp.Launcher$TgThread.run(Launcher.java:889)
Caused by: net.sourceforge.jnlp.LaunchException: Fatal: Initialization
Error: A fatal error occurred while trying to verify jars. Description:
error in opening zip file
at
net.sourceforge.jnlp.runtime.JNLPClassLoader.initializeResources(JNLPClassLoader.java:485)
at
net.sourceforge.jnlp.runtime.JNLPClassLoader.<init>(JNLPClassLoader.java:204)
at
net.sourceforge.jnlp.runtime.JNLPClassLoader.getInstance(JNLPClassLoader.java:323)
at net.sourceforge.jnlp.Launcher.createApplication(Launcher.java:770)
... 2 more
Caused by:
net.sourceforge.jnlp.LaunchException: Fatal: Initialization Error: A fatal
error occurred while trying to verify jars. Description: error in opening
zip file
at
net.sourceforge.jnlp.runtime.JNLPClassLoader.initializeResources(JNLPClassLoader.java:485)
at
net.sourceforge.jnlp.runtime.JNLPClassLoader.<init>(JNLPClassLoader.java:204)
at
net.sourceforge.jnlp.runtime.JNLPClassLoader.getInstance(JNLPClassLoader.java:323)
at net.sourceforge.jnlp.Launcher.createApplication(Launcher.java:770)
at net.sourceforge.jnlp.Launcher.launchApplication(Launcher.java:552)
at net.sourceforge.jnlp.Launcher$TgThread.run(Launcher.java:889)


Segundo:

net.sourceforge.jnlp.LaunchException: Fatal: Launch Error: Could not launch
JNLP file.
at net.sourceforge.jnlp.Launcher.launchApplication(Launcher.java:600)
at net.sourceforge.jnlp.Launcher$TgThread.run(Launcher.java:889)
Caused by: java.lang.ClassNotFoundException: garantias.IngresoSistema
at
net.sourceforge.jnlp.runtime.JNLPClassLoader.loadClassExt(JNLPClassLoader.java:1551)
at
net.sourceforge.jnlp.runtime.JNLPClassLoader.loadClass(JNLPClassLoader.java:1397)
at net.sourceforge.jnlp.Launcher.launchApplication(Launcher.java:574)
... 1 more
Caused by:
java.lang.ClassNotFoundException: garantias.IngresoSistema
at
net.sourceforge.jnlp.runtime.JNLPClassLoader.loadClassExt(JNLPClassLoader.java:1551)
at
net.sourceforge.jnlp.runtime.JNLPClassLoader.loadClass(JNLPClassLoader.java:1397)
at net.sourceforge.jnlp.Launcher.launchApplication(Launcher.java:574)
at net.sourceforge.jnlp.Launcher$TgThread.run(Launcher.java:889)