If you are experiencing problems with the Equation Editor, make sure your browser is set up correctly.
The browser tuneup will step you through the process: http://www.webct.com/tuneup.
These settings are described in the Intro to WebCT for Students Workshop Notes. PPT (479 KB) PDF (1 MB). The notes include screen captures and instructions.
You may also need the Java Runtime Environment, JRE, as well as Java for the Equation Editor to function correctly: http://www.java.com/en/download/manual.jsp.
If you are having problems using the Equation Editor in the Quiz Tool, the quickest solution is to download, install and use the latest version of the Firefox browser: http://www.getfirefox.com. This is a free download.