Frequently Asked Questions   Sections

The Gentleware FAQ is a comprehensive list of questions regarding Poseidon for UML. At this time, third-party plug-ins and products are not covered in this FAQ but we plan to add them in the future. Further information is available from the Poseidon documentation or you can post to our forum.

 

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Please feel free to submit questions regarding any Gentleware product, including the plug-ins and partner products, to info@gentleware.com.

 

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FAQ Section: Download, Installation, First Start
  1. What do I do when the Installer says "Magic number did not match" ?
  2. WebStart stops with the error 'Wrong Certificate used to sign resource'
  3. Poseidon does not start. What do I do?
  4. How can I run Poseidon in a different language?
  5. How can I move/rename Poseidon's configuration directory?
  6. "java.util.zip.ZipException: name length exceeds 512 bytes" exception when starting the Embedded Edition
  7. "Invalid command line switch: -xmx192m" error on first start
  8. What do I do when the installer does not start?
  9. Why do I get a ClassNotFoundException when starting Eclipse with Poseidon installed?

    In Linux systems, Poseidon can only be run in conjunction with Eclipse when Eclipse is run with Java 5. If you are seeing this message:

      Unhandled event loop exception
      Reason:
      Not implemented (java.lang.ClassNotFoundException: 
        sun.awt.X11.XEmbeddedFrame)
      *** SWT nested exception
      Reason:
      sun.awt.X11.XEmbeddedFrame
    

    when starting Eclipse after installing the bridge, you should download and install Java 5, available at http://java.sun.com/j2se/1.5.0/index.jsp.

    After that, you need to start Eclipse using Java 5. Start Eclipse with the parameter "-vm PATH-TO-THE-JAVA-VM".

    E.g.: ./eclipse -vm /usr/local/share/jdk1.5.0/bin/java -vmargs -Xmx256M

  10. How do I use the installer with Windows 2003?
  11. Why aren't my EE clients connecting to the EE server when the server runs on Linux?
  12. Why does my server using RMI connot be connected?
  13. I get an OutOfMemoryException when using Poseidon with Eclipse. What can I do?
  14. How do I use the installer with Windows Vista?

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