It really is an inconsistency, I have followed your suggestion b) and it works. I will try to post your findings to IMS Global Consortium :-)
Thanks Mensaje citado por Hussein Shafie <hussein at xmlmind.com>: > * imsmanifest.xml is validated against imscp_v1p1.xsd + imsmd_v1p2p4.xsd > > * imscp_v1p1.xsd contains: > > <xsd:import namespace = "http://www.w3.org/XML/1998/namespace" > schemaLocation = "http://www.w3.org/2001/xml.xsd"/> > > * imsmd_v1p2p4.xsd contains: > > <xsd:import namespace = "http://www.w3.org/XML/1998/namespace" > schemaLocation = "http://www.w3.org/2001/03/xml.xsd"/> > > No matter what may think <Oxygen> (which uses a validator different from > XMLmind's), this is obviously inconsistent! > > --> Consequences: > > [1] Unless you use an XML catalog, xml.xsd is downloaded twice from the > web site of the W3C which causes the validation to take forever. > > [2] The above errors are (correctly) reported. > > --> Fix: > > * Use an XML catalog which maps both http://www.w3.org/2001/xml.xsd and > http://www.w3.org/2001/03/xml.xsd to the *same* local copy of xml.xsd > > (copy XMLSchema.dtd along xml.xsd because xml.xsd starts with totally > useless and pretty inefficient: <!DOCTYPE xs:schema PUBLIC "-//W3C//DTD > XMLSCHEMA 200102//EN" "XMLSchema.dtd">) > > * OR replace http://www.w3.org/2001/xml.xsd and > http://www.w3.org/2001/03/xml.xsd by xml.xsd > > (and remove <!DOCTYPE xs:schema PUBLIC "-//W3C//DTD XMLSCHEMA > 200102//EN" "XMLSchema.dtd"> from it) > > I did that: no slowness, no errors. imsmanifest.xml, but also > imscp_v1p1.xsd and imsmd_v1p2p4.xsd, all validate fine. > > > > > > > > > --

