I can't reproduce this. I couldn't import the file you provided, due to unescaped CDATA close elements (]]>). I fixed those, imported the style, and exported it. These are now exported as "]-]->" (and fixed on import) as this was reported as a problem in 1.0.
I meet solve same Mike! , When i install add one then i saw warning : The provided file was not a valid XML file. Please provide a valid XML file.
I can not install it, please help me . I have attach file xml bellow.