If you use Adobe Flash CS to publish Flash SWF file and copy the code generated by Flash CS to your HTML file, you may get the error message "This page requires AC_RunActiveContent.js" when you login to the protected HTML page.

To fix the problem:

The Adobe Flash CS will create a file "AC_RunActiveContent.js" file when publishing Flash SWF. You must upload this file with your HTML file.

In the generated HTML code, please DELETE below lines:

<script language="javascript">AC_FL_RunContent = 0;</script>
<script language="javascript">DetectFlashVer = 0;</script>