Problems validating XML generated by si_to_xsi.xsl

[njh]

I am using si_to_xsi.xsl to generate XSI.xml from SI.xml:

xsltproc --output public/radiodns/epg/XSI.xml si_to_xsi.xsl public/radiodns/spi/3.1/SI.xml

However the resulting file does not validate:

curl -o radioepg_xsi_11.xsd http://schemas.radiodns.org/epg/11/radioepg_xsi_11.xsd
$ xmllint --schema radioepg_xsi_11.xsd --noout public/radiodns/epg/XSI.xml 
error : Unknown IO error
warning: failed to load external entity "http://www.worlddab.org/schemas/epgDataTypes/14/epgDataTypes_14.xsd"
radioepg_xsi_11.xsd:13: element import: Schemas parser warning : Element '{http://www.w3.org/2001/XMLSchema}import': Failed to locate a schema at location 'http://www.worlddab.org/schemas/epgDataTypes/14/epgDataTypes_14.xsd'. Skipping the import.
radioepg_xsi_11.xsd:24: element attribute: Schemas parser error : attribute decl. 'creationTime', attribute 'type': The QName value '{http://www.worlddab.org/schemas/epgDataTypes/14}timePointType' does not resolve to a(n) simple type definition.
radioepg_xsi_11.xsd:25: element attribute: Schemas parser error : attribute decl. 'originator', attribute 'type': The QName value '{http://www.worlddab.org/schemas/epgDataTypes/14}originatorType' does not resolve to a(n) simple type definition.
radioepg_xsi_11.xsd:26: element attribute: Schemas parser error : attribute decl. 'serviceProvider', attribute 'type': The QName value '{http://www.worlddab.org/schemas/epgDataTypes/14}serviceProviderType' does not resolve to a(n) simple type definition.
radioepg_xsi_11.xsd:46: element group: Schemas parser error : Element '{http://www.w3.org/2001/XMLSchema}group', attribute 'ref': The QName value '{http://www.worlddab.org/schemas/epgDataTypes/14}serviceNameGroup' does not resolve to a(n) model group definition.
radioepg_xsi_11.xsd:48: element element: Schemas parser error : element decl. '{http://schemas.radiodns.org/epg/11}mediaDescription', attribute 'type': The QName value '{http://www.worlddab.org/schemas/epgDataTypes/14}mediaDescriptionType' does not resolve to a(n) type definition.
radioepg_xsi_11.xsd:49: element element: Schemas parser error : element decl. '{http://schemas.radiodns.org/epg/11}link', attribute 'type': The QName value '{http://www.worlddab.org/schemas/epgDataTypes/14}linkType' does not resolve to a(n) type definition.
radioepg_xsi_11.xsd:58: element group: Schemas parser error : Element '{http://www.w3.org/2001/XMLSchema}group', attribute 'ref': The QName value '{http://www.worlddab.org/schemas/epgDataTypes/14}serviceNameGroup' does not resolve to a(n) model group definition.
radioepg_xsi_11.xsd:60: element element: Schemas parser error : element decl. '{http://schemas.radiodns.org/epg/11}mediaDescription', attribute 'type': The QName value '{http://www.worlddab.org/schemas/epgDataTypes/14}mediaDescriptionType' does not resolve to a(n) type definition.
radioepg_xsi_11.xsd:61: element element: Schemas parser error : element decl. '{http://schemas.radiodns.org/epg/11}genre', attribute 'type': The QName value '{http://www.worlddab.org/schemas/epgDataTypes/14}genreType' does not resolve to a(n) type definition.
radioepg_xsi_11.xsd:63: element element: Schemas parser error : element decl. '{http://schemas.radiodns.org/epg/11}keywords', attribute 'type': The QName value '{http://www.worlddab.org/schemas/epgDataTypes/14}keywordsType' does not resolve to a(n) type definition.
radioepg_xsi_11.xsd:64: element element: Schemas parser error : element decl. '{http://schemas.radiodns.org/epg/11}link', attribute 'type': The QName value '{http://www.worlddab.org/schemas/epgDataTypes/14}linkType' does not resolve to a(n) type definition.
radioepg_xsi_11.xsd:100: element group: Schemas parser error : Element '{http://www.w3.org/2001/XMLSchema}group', attribute 'ref': The QName value '{http://www.worlddab.org/schemas/epgDataTypes/14}serviceNameGroup' does not resolve to a(n) model group definition.
radioepg_xsi_11.xsd:102: element element: Schemas parser error : element decl. '{http://schemas.radiodns.org/epg/11}mediaDescription', attribute 'type': The QName value '{http://www.worlddab.org/schemas/epgDataTypes/14}mediaDescriptionType' does not resolve to a(n) type definition.
radioepg_xsi_11.xsd:104: element element: Schemas parser error : element decl. '{http://schemas.radiodns.org/epg/11}genre', attribute 'type': The QName value '{http://www.worlddab.org/schemas/epgDataTypes/14}genreType' does not resolve to a(n) type definition.
radioepg_xsi_11.xsd:106: element element: Schemas parser error : element decl. '{http://schemas.radiodns.org/epg/11}keywords', attribute 'type': The QName value '{http://www.worlddab.org/schemas/epgDataTypes/14}keywordsType' does not resolve to a(n) type definition.
radioepg_xsi_11.xsd:107: element element: Schemas parser error : element decl. '{http://schemas.radiodns.org/epg/11}link', attribute 'type': The QName value '{http://www.worlddab.org/schemas/epgDataTypes/14}linkType' does not resolve to a(n) type definition.
WXS schema radioepg_xsi_11.xsd failed to compile

[njh]

Attaching XSI.xml and SI.xml as a zip file.
si-and-xsi.zip