Troubleshooting Seeing Math™ Secondary Interactives

Java Note

You need Java 1.3.1 or higher to run these interactives.

Windows or Linux

If you haven't yet installed a recent version of Java and you are running Windows or Linux visit to download the latest version. Detailed installation instructions can be found from: download/help/index_installing.xml


Up-to-date Java versions are already built into MacOS X. The version of Java in MacOS Classic (Mac OS 9 and below) cannot be upgraded to run these interactives. Detailed information can be found at

Several users have reported problems when attempting to run Seeing Math Secondary interactives with the following system configuration:

These problems have been confirmed to occur even after determining that the users have installed Java 1.3.1 or higher.


After clicking to open an interactive, you get a window that looks like this:

Check Java Version

Even if you believe you have already installed Java 1.3.1 or higher, you should check the version of the Java Runtime Environment (JRE) that your browser is by clicking on the Verify Installation button on the Manual Download Page. If your browser reports that the Java Runtime Vendor is Microsoft Corp., and the Java Runtime Version is 1.1.4, you have probably not configured the Sun JRE to be the default for Internet Explorer.

Make Sun JRE the Default for Internet Explorer

To make the latest Sun JRE the default for Internet Explorer, you may need to follow one or both of the following procedures:

Change Internet Options

  1. From within Internet Explorer, click Tools > Internet Options in the menus.
  2. Click the Advanced tab:
  3. Make sure that the option to use the Sun JRE is selected:
  4. Click the Security tab.
  5. Click the Custom Level... button:
  6. Make sure that scripting of java applets is enabled:
  7. Click OK to accept the security settings.
  8. Click OK to accept all internet options.
  9. Exit and restart Internet Explorer.

More details are available at:

Use The Control Panel

  1. From the Windows Start menu, click Settings > Control Panel.
  2. Double-click to open the Java Control Panel:
  3. Click the Advanced tab.
  4. Click the + next to <APPLET> tag support.
  5. Make sure the box next to Internet Explorer is selected:
  6. Click OK.

More details are available at:

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