Blank screen when attempting to launch MITSIS

I am attempting to launch MITSIS, from http://mitsis.mit.edu/, and am seeing a blank page displayed.

Solution

The most likely reason is that Sun Java Runtime Environment is not installed. See: Install SUN Java Runtime Environment for MITSIS Use

If JRE is already installed, check for an older Firefox version.

• For Firefox 3.0 - 3.0.18, additional configuration is needed.
• The recommended solution is to upgrade to the current version of Firefox. See: http://getfirefox.com
• If you choose to keep the older Firefox version, use the following steps to enable Java:
  1. Follow the menu path Tools > Options > Content
  2. Select Enable Java checkbox

To determine whether the JRE is installed, and to identify the version of Java installed on the desktop:

1. Execute the following command at the DOS command line: java -version.
2. If you receive an error, this is an indication that Java is not installed.