ERROR: ID is already used on element scorer

It is possible to encounter the following error when trying to export your project to DHTML.

ID P25o1scr is already used on element scorer

The P25o1scr value will likely be different for your book, as this value is unique to each book. To help determine where the problem is coming from, look in your book on page id 25. Note that Page 25 and Page ID 25 are not the same. The easiest way to get to page id 25 would be to open the Command Window (VIEW menu in Instructor - not available in Assistant), and type in the Command Window: go to page id 25 and press enter.

This error message is essentially saying that you have a Score catalog button on your page [this may be one of the various scoring buttons in the catalog such as Score Page, Score Quiz, etc.] and you also have added additional Actions Editor code to the Score button in which you have called the SCORE action. This effectively is attempting to do a double scoring, which is triggering this error.

If you are going to handle the Scoring yourself via Actions Editor code, attach that Actions Editor logic to a standard button rather than the special Score buttons from the Catalog.