Hi, I have some XML Schemas that xs:import the xml namespace attributes (xml:base so I can use XInclude and be able to validate it). I am getting a validation error on the schemas themselves when I try to validate in oxygen saying they can't find the xml.xsd which is in the same directory as the import schema. Here is the error message: Description: W schema_reference.4: Failed to read schema document 'xml.xsd', because 1) could not find the document; 2) the document could not be read; 3) the root element of the document is not <xsd:schema>. URL: http://www.w3.org/TR/xmlschema-1/#schema_reference When I use JARV/MSV the schemas validate (and so does the instance document). Is this a bug in oxygen or perhaps xerces? I am using oxygen 6.1 and Mac OS X. (I have also tried using xs:anyAttribute with the xml namespace and neither oxygen or JARV validates the instance document.) Here is a test schema and a xml.xsd: <?xml version="1.0" encoding="UTF-8"?> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"> <xs:import namespace="http://www.w3.org/XML/1998/namespace" schemaLocation="xml.xsd"/> </xs:schema> <?xml version="1.0" encoding="UTF-8"?> <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" targetNamespace="http://www.w3.org/XML/1998/namespace" xmlns:xml="http://www.w3.org/XML/1998/namespace"> <xsd:attribute name="base"/> </xsd:schema> best, -Rob