Impossible de lancer l'application

bonsoir,

mon application ne marche pas a chaque fois que je la lance. merc de m'aider svp.

voila les détail:

Code:

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<jnlp spec="1.0+" codebase="http://s3.roomsserver.com/java/">
  <information>
    <title>شركة رومس سيرفر العالميه</title>
    <vendor>www.roomsserver.org</vendor>
    <homepage href="http://www.w999r.com"/>
    <description>&& غرفة التأصيل العلمي &&</description>
    <icon href="webconf-icon.gif"/>
  </information>
  <application-desc>
    <argument>rm=1</argument>
    <argument>server=s3.roomsserver.com</argument>
    <argument>room=21466470</argument>
    <argument>user=oumabdirrahmane</argument>
    <argument>pass=tawheed</argument>
    <argument>logo=</argument>
    <argument>icon=</argument>
    <argument>title=&& غرفة التأصيل العلمي &&</argument>
    <argument>prompt=ஜ  اللهم فقهنا في ديننا  ஜ</argument>
    <argument>color1=33cccc</argument>
    <argument>color2=33ffff</argument>
    <argument>layout=</argument>
    <argument>wbsize=70</argument>
    <argument>tcsize=60</argument>
  </application-desc>
  <security>
    <all-permissions/>
  </security>
  <resources os="Windows">
    <j2se version="1.5+"/>
    <jar href="pack/webconf.jar"/>
    <jar href="pack/webrenderer.jar"/>
    <nativelib href="webconf-win.jar"/>
    <jar href="webrenderer-win.jar"/>
  </resources>
  <resources os="Mac OS X">
    <j2se version="1.5+"/>
    <jar href="pack/webconf.jar"/>
    <jar href="pack/webrenderer.jar"/>
    <nativelib href="webconf-osx.jar"/>
    <jar href="webrenderer-osx.jar"/>
    <property name="apple.laf.useScreenMenuBar" value="true"/>
    <property name="apple.awt.graphics.UseQuartz" value="true"/>
  </resources>
</jnlp>

Citation:

JNLPException[category: Erreur de sécurité : Exception: null : LaunchDesc:

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<jnlp spec="1.0+" codebase="http://s3.roomsserver.com/java/">
  <information>
    <title>شركة رومس سيرفر العالميه</title>
    <vendor>www.roomsserver.org</vendor>
    <homepage href="http://www.w999r.com"/>
    <description>&& غرفة التأصيل العلمي &&</description>
    <icon href="webconf-icon.gif"/>
  </information>
  <application-desc>
    <argument>rm=1</argument>
    <argument>server=s3.roomsserver.com</argument>
    <argument>room=21466470</argument>
    <argument>user=oumabdirrahmane</argument>
    <argument>pass=tawheed</argument>
    <argument>logo=</argument>
    <argument>icon=</argument>
    <argument>title=&& غرفة التأصيل العلمي &&</argument>
    <argument>prompt=ஜ  اللهم فقهنا في ديننا  ஜ</argument>
    <argument>color1=33cccc</argument>
    <argument>color2=33ffff</argument>
    <argument>layout=</argument>
    <argument>wbsize=70</argument>
    <argument>tcsize=60</argument>
  </application-desc>
  <security>
    <all-permissions/>
  </security>
  <resources os="Windows">
    <j2se version="1.5+"/>
    <jar href="pack/webconf.jar"/>
    <jar href="pack/webrenderer.jar"/>
    <nativelib href="webconf-win.jar"/>
    <jar href="webrenderer-win.jar"/>
  </resources>
  <resources os="Mac OS X">
    <j2se version="1.5+"/>
    <jar href="pack/webconf.jar"/>
    <jar href="pack/webrenderer.jar"/>
    <nativelib href="webconf-osx.jar"/>
    <jar href="webrenderer-osx.jar"/>
    <property name="apple.laf.useScreenMenuBar" value="true"/>
    <property name="apple.awt.graphics.UseQuartz" value="true"/>
  </resources>
</jnlp>

Code:

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at com.sun.javaws.security.JNLPSignedResourcesHelper.checkSignedResourcesHelper(Unknown Source)
	at com.sun.javaws.security.JNLPSignedResourcesHelper.checkSignedResources(Unknown Source)
	at com.sun.javaws.Launcher.prepareResources(Unknown Source)
	at com.sun.javaws.Launcher.prepareAllResources(Unknown Source)
	at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source)
	at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source)
	at com.sun.javaws.Launcher.launch(Unknown Source)
	at com.sun.javaws.Main.launchApp(Unknown Source)
	at com.sun.javaws.Main.continueInSecureThread(Unknown Source)
	at com.sun.javaws.Main$1.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)