MarvinSpace Frequently Asked Questions

• I got an "UnsatisfiedLinkError" or an X on the grey window or "no jogl in java.library.path" error.
• The browser closed all of its windows.
• I got a dialog that displays: "Native libraries are already loaded by another applet".
• Not enough memory to complete operation.

• The browser asks where to save the file instead of launching.
• After downloading Java Web Start, the browser still wants to save the file.
• After launching, I get the following error message:

  An error occured while launching/running the application.
  Category: Launch File Error
  Unsupported JNLP version in launch file: 1.0. Only version 0.2 is supported with this version.

• The browser displays the jnlp file as text.
• How do I clear the JWS cache?

• The application is very slow, it seems frozen after a clicking or choosing a function from a menu.

• I got an "UnsatisfiedLinkError" or an X on the grey window or "no jogl in java.library.path" error.

  The reason is that JOGL was not installed properly. Probably jogl.jar is not in the archive tag of the applet.

• The browser closed all of its windows.

  That is a known bug of the applet with older versions of Firefox and Mozilla. Installing Firefox 1.5 will solve this problem. With Internet Explorer this problem was not experienced.

• I got a dialog that displays: "Native libraries are already loaded by another applet".

  This is due to the known issue: one applet works at a time. Closing all browser windows and restarting solves this.

• Not enough memory to complete operation.

  There is 64Mb memory available to the JVM by default. This might not be enough for larger computations like calculating a bigger molecular surface. The memory available to applets can be increased locally:
  

  On the Java Control Panel click the "Java" tab, and select "View..." for Java Applet Runtime Settings. In the appearing dialog you can set 512 Mb by inserting -Xmx512M to the Java Runtime Parameters column of the default JRE row.

• The browser asks where to save the file instead of launching.

  Java Web Start is not installed on your machine, please download Java Web Start.

• After downloading Java Web Start, the browser still wants to save the file.

  After installing Java Web Start, you must restart your browser. It the problem still rises log off and on.

• After launching, I get the following error message:

  An error occured while launching/running the application.
  Category: Launch File Error
  Unsupported JNLP version in launch file: 1.0. Only version 0.2 is supported with this version.

  You have an old version of Java Web Start, you have to reinstall it. The latest Java Web Start can be downloaded from here.

• The browser displays the jnlp file as text.

  Setting MIME type is necessary, please follow the browser-specific instructions bellow:

  Netscape, Mozilla

  Please set up the Java Web Start MIME type JNLP in the Edit->Preferences->Navigator-> Helper Applications section.
  To do this:

  • Open the Edit->Preferences->Navigator->Helper Applications menu
  • Click on New Type... button and fill the fields:

    File extension:	jnlp
    Mime type:	application/x-java-jnlp-file
    Application to use:	JAVA_HOME/javaws/javaws

  Opera

  Please set up the Java Web Start MIME type JNLP in the Tools->Preferences->File types section.
  To do this:

  • Open the Tools->Preferences->File types menu
  • Click on New... button and fill the fields:

    File extensions:	jnlp
    MIME type:	application/x-java-jnlp-file
    Open with other application:	JAVA_HOME/javaws/javaws

• How do I clear the JWS cache?

  Java 1.4, Java 1.5

  Windows

  Run javaws.exe. It is in your %JAVA_HOME%\jre\javaws OR %JAVA_HOME%\javaws directory.

  Select "File" --> "Preferences".

  Select the "Advanced" tab. Click on "Clear Folder" button.

  When prompted, click "Yes" to clear the Cache.

  Linux

  Run javaws. It is in your $JAVA_HOME(/jre)/javaws directory.

  From the menu select "File" --> "Preferences".

  Select the "Advanced" tab. Click on "Clear Folder" button.

  When prompted, click "Yes" button to clear the Cache.

  Mac OS X

  Run Finder --> Applications --> Utilities --> Java --> Java Web Start

  Click on MarvinSpace, and select "Remove Application" in the "Application" menu

  OR
  

  Select "Preferences" in the Java Web Start menu, click on "Clear Folder" button on the "Advanced" tab

  Java 1.6

  • Start the Java Control Panel

    Windows

    Start -> Settings -> Control Panel -> Java
    (Or run javacpl.exe from your %JAVA_HOME%\jre\bin directory.)

    Linux

    Run javacpl. It is in your $JAVA_HOME(/jre)/bin directory.

    Mac OS X

    Run Finder --> Applications --> Utilities --> Java --> Java Control Panel

  • Select "View..." on the "General" tab.
  • Press Del on each MarvinSpace rows in the application list

• The application is very slow, it seems frozen after a clicking or choosing a function from a menu.

  There are knows bugs of certain graphics drivers that are causing the intensive slowing of the application.
  Updating the graphic driver will likely solve the problem.
  If the problem still remains, please report us your type of graphic card, driver version, operating system and the function that causes problems.
  For example certain integrated Intel graphics cards almost froze the application in case of displaying a molecular surface in dot mode until doing a workaround.