Problems running the Jmol Applet in a web page

The applet does not show up.

A black square is displayed with a message Error. Click to get more information. When you click, a dialog opens:

Application error.
The application could not execute.
Click on 'Details' for more information.

When yopu click, the Java console opens:

load: class JmolApplet not found.
java.lang.ClassNotFoundException: JmolApplet
(etc.)

Check if you have forgotten to include a call to jmolInitialize() in your page's source code. Instructions for using jmolInitialize() and the Jmol.js library.

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