Created Issue: Ajax Css Minifier Errors [9]

During testing of our application, we have seen a couple of times where MicrosoftAjaxCssMinifier is throwing an exception. In both cases the css file was jquery.ui.core.css

One time it was a parse error and another time it was NullReferenceException.

The version of the file is: jQuery UI CSS Framework 1.8.22

I have attached the yellow screen of death page screen shots.

Note: this web site is deployed to Windows Azure.