CSS Validator not working

Hello,

Over the last 2 weeks I have attempted to use your online CSS validator
with very little luck. I keep getting the following error after entering
in a URL to a style shee that I know is there
(http://www.aarp.org/style/common.css):

CSS
                                             Validator
                                                    Error

Target: http://www.aarp.org/style/common.css

I/O Error: Unknown mime type : application/x-pointplus

What's going on? I rely on this thing in development. I also cannot
download the validator.

Any help would be appreciated. Thanks.

Chris McDaniel
Senoir Web Developer
AARP