I am also having this problem. I tried uninstalling and reinstalling the
batclient and i get an error. When I click to install the batclient on the
"Play Batmud" page, a window pops up saying, "Do you want to save
batclient.jnpl file" I click "Save File" It goes to download then (I'm using
Mozilla Firefox as my browser) I click on the batclient.jnpl file to open it to
launch the batclient It says "Verifying Application", then it says "Unable to
launch the application" I click "Details" to find out more information on the
error and this is what comes up:
Error: Missing required Permissions manifest attribute in main jar:
https://www.bat.org/batclient/lib/bat_client.jar
In the "Launch File": Tab:
<jnlp spec="1.6+" codebase="
http://www.bat.org/batclient"
href="batclient.jnlp">
<information>
<title>BatMUD</title>
<vendor>Balanced Alternative Techniques ry</vendor>
<homepage href="docs/help.html"/>
<description>Batclient</description>
<description kind="short">A graphical user interface for
BatMUD.</description>
<icon href="
http://www.bat.org/batclient/images/icon.gif"/>
<shortcut>
<desktop/>
<menu submenu="BatMUD"/>
</shortcut>
</information>
<security>
<all-permissions/>
</security>
<resources>
<j2se version="1.6+" java-vm-args="-Xmx1g"/>
<jar href="lib/bat_client.jar"/>
<jar href="lib/bat_resources.jar"/>
<jar href="lib/bat_interfaces.jar"/>
<jar href="lib/bat_html.jar"/>
<jar href="lib/jdom.jar"/>
<jar href="lib/bsh-2.0b4.jar"/>
<jar href="lib/swingx.jar"/>
<jar href="lib/swingx-bean.jar"/>
<jar href="lib/swingx-ws-2009_04_19.jar"/>
<jar href="lib/swing-worker.jar"/>
<jar href="lib/jogg-0.0.7.jar"/>
<jar href="lib/jorbis-0.0.13.jar"/>
<jar href="lib/mp3spi1.9.5.jar"/>
<jar href="lib/tritonus_share.jar"/>
<jar href="lib/vorbisspi1.0.1.jar"/>
<jar href="lib/jl1.0.1.jar"/>
</resources>
<application-desc main-class="com.mythicscape.batclient.Main"/>
</jnlp>
In the "Exception" Tab:
java.lang.SecurityException: Missing required Permissions manifest attribute in
main jar:
http://www.bat.org/batclient/lib/bat_client.jar
at com.sun.deploy.security.DeployManifestChecker.verifyMainJar(Unknown
Source)
at com.sun.deploy.security.DeployManifestChecker.verifyMainJar(Unknown
Source)
at com.sun.javaws.Launcher.doLaunchApp(Unknown Source)
at com.sun.javaws.Launcher.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)