What does the error "htmlfile: invalid argument" mean? I'm getting this in excanvas.js
<p>I'm hitting this error and I'm not really sure why.  I have a minified version of excanvas.js and something is breaking in IE, specifically on:</p>

<p><code>
var b=a.createStyleSheet();
</code></p>

<p>I'm not sure why.  Does anyone have any insight?  I can provide more information, I'm just not sure what information will help.</p>
