Script problems in RH 11

I'm hoping someone here knows the answer to this.  We have a number (a LOT) of projects in RoboHelp 9.  When a project  is upgraded to RH 11, the topics do not display correctly in the editing pane.  The files begin with a series of buttons with attached scripts, and, looking at the file in HTML view, we can see that the first script executes correctly, but the second one doesn't close, so the entire topic is treated as part of the script.  The two scripts begin and end correctly, but the first one begins with:

</script>

<script language="javascript" type="text/javascript">

While the second one begins with:

</script><script type="text/javascript">

//<![CDATA[

//<script type="text/javascript">

I don't want to make the entire script public here, but I'm happy to send it to anyone who thinks they can help.

Any idease?

The files have always worked perfectly until RH 11.