[jats-list] Invalid Schema Files

["Jean Gelinas jgelinas@xxxxxxxxxxxx" <jats-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

Assigning schema JATS-articleauthoring1-mathml3.xsd version 1.1d1 to text file
bmj_sample.xml in Altova XML Spy.    Get the following error:

File
D:\Development\JATS\articleauthoring\1.1d1\xsd\JATS-Authoring-1-1d1-MATHML3-X
SD\JATS-articleauthoring1-mathml3.xsd is not valid.
                File
D:\Development\JATS\articleauthoring\1.1d1\xsd\JATS-Authoring-1-1d1-MATHML3-X
SD\xlink.xsd has errors.
                                'xlink:href' is already declared.
                                                Error location: schema /
attribute
                                                Details
                                                                sch-props-cor
rect.2: 'xlink:href' is already declared.

Get this error when trying the same using JATS-articleauthoring1.xsd (version
1.0):

File D:\Development\JATS\articleauthoring\1.0\xsd\JATS-articleauthoring1.xsd
is not valid.
                File D:\Development\JATS\articleauthoring\1.0\xsd\xlink.xsd
has errors.
                                'xlink:href' is already declared.
                                                Error location: xs:schema /
xs:attribute
                                                Details
                                                                sch-props-cor
rect.2: 'xlink:href' is already declared.

When trying to generate an xsd from the dtd
(JATS-articleauthoring1-mathml3.dtd (version 1.1d2), again, using Altova XML
Spy, and then applying those schemas (2 are generated) against the text file
(bmj_sample.xml) get this error:
File
D:\Development\JATS\articleauthoring\1.1d2\dtd\JATS-Authoring-MathML3-1.1d2\T
oXSD2.xsd is not valid.
                File C:\Program
Files\Altova\Common2015\Schemas\math\files\common\xlink-href.xsd has errors.
                                'xlink:href' is already declared.
                                                Error location: schema /
attribute
                                                Details
                                                                sch-props-cor
rect.2: 'xlink:href' is already declared.

Want to use the schema to generate a class/object structure in code.  Without
a valid schema, most code generators (at least any that I seem to be using),
cannot generate.

Jean Gelinas
Software Engineer