Help me! I can't run a .jar file!

Discussion in 'Mac OS X System & Mac Software' started by The Ripper18, Oct 14, 2006.

  1. The Ripper18

    The Ripper18 Registered

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    I play a game called Runescape, and I wanted to try playing on a private server. I found a good program for running private servers called MoparScape. Unfortunately, in the readme it says mac users should run the file "MoparScape.jar", but when I run it I get the following alert: "The jar file "MoparScape.jar" couldn't be launched. Check the Console for possible error messages." Can anybody help me?

    Edit: I run OS 10.3.9
     
  2. Natobasso

    Natobasso Tech-Bot 5000

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  3. ElDiabloConCaca

    ElDiabloConCaca U.S.D.A. Prime

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    Did you check the console for error messages, like the error message recommended? What were the error messages?
     
  4. mrmagoo123

    mrmagoo123 Registered

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    I have the exact same problem. Here's what it says when you open the console:

    Jar Launcher[805]: Could not contact MightyMouseHelper.app: Err 6

    Exception in thread "main" java.lang.UnsupportedClassVersionError: Bot (Unsupported major.minor version 49.0)

    at java.lang.ClassLoader.defineClass0(Native Method)

    at java.lang.ClassLoader.defineClass(ClassLoader.java:539)

    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)

    at java.net.URLClassLoader.defineClass(URLClassLoader.java:251)

    at java.net.URLClassLoader.access$100(URLClassLoader.java:55)

    at java.net.URLClassLoader$1.run(URLClassLoader.java:194)

    at java.security.AccessController.doPrivileged(Native Method)

    at java.net.URLClassLoader.findClass(URLClassLoader.java:187)

    at java.lang.ClassLoader.loadClass(ClassLoader.java:289)

    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)

    at java.lang.ClassLoader.loadClass(ClassLoader.java:235)

    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)


    I hope that makes sense to someone.
     
  5. VirtualTracy

    VirtualTracy Thunderbirds are GO!

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    Can I ask where this .jar file was sourced from? You may need to ask the original .jar file creator about this error .... which website did you download it from?




    .
     
    Last edited: Sep 9, 2008
  6. mrmagoo123

    mrmagoo123 Registered

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  7. hasmiza73

    hasmiza73 Registered

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    i got the .jar file when i tried to install the camera setup in for my facebook chat.

    when i tried to install it, it gave me the error message like this:

    **************************************************
    "Check the Console for possible error messages."

    How can i rectify this?
     
    Last edited by a moderator: Oct 24, 2011

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