UserStyle

[1Map]

Some of my Geoserver SLD files start with:

<sld:StyledLayerDescriptor 
  version="1.0.0" 
  xmlns:sld="http://www.opengis.net/sld" 
  xmlns:ogc="http://www.opengis.net/ogc"
  xmlns:xlink="http://www.w3.org/1999/xlink" 
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://www.opengis.net/sld http://schemas.opengis.net/sld/1.0.0/StyledLayerDescriptor.xsd">

and others with:

<sld:UserStyle xmlns="http://www.opengis.net/sld" xmlns:sld="http://www.opengis.net/sld" xmlns:ogc="http://www.opengis.net/ogc" xmlns:gml="http://www.opengis.net/gml">

which causes an error:

Cannot read property 'push' of undefined

due to the fact that StyledLayerDescriptor is missing. Both my styles are valid SLD's for geoserver, but fail in your reader.