Convert XML Schema to Class using XSD

[Mark Parter]

I'm trying convert an XML Schema
(http://www.elframework.org/projects/..._r1.0.xsd/view) to a VB.Net
class using the XSD tool provided with the .NET 2 SDK. However, it's failing
to generate the class and is outputting the following error(s);

Schema validation warning: Undefined complexType
'http://purl.org/dc/elements/1.1/:SimpleLiteral' is used as a base for
complex type extension. Line 433, position 5.
Schema validation warning: The derived type and the base type must have the
same content type. Line 288, position 3.
Schema validation warning: The derived type and the base type must have the
same content type. Line 293, position 3.
Schema validation warning: The derived type and the base type must have the
same content type. Line 298, position 3.
Schema validation warning: The 'http://purl.org/dc/elements/1.1/:any'
element is not declared. Line 453, position 7.
Schema validation warning: The 'http://purl.org/dc/elements/1.1/:any'
element is not declared. Line 155, position 5.
Schema validation warning: The
'http://www.imsglobal.o rg/services/rli/xsd/imsRLIManDataSc hema_v1p0:resou rceList' element is not declared. Line 615, position 7.
Schema validation warning: Invalid particle derivation by restriction -
'Derived element 'http://purl.org/dc/elements/1.1/:any' is not a valid
restriction of base element 'http://elframework.org/curriculum/elements:code'
according to Elt:Elt -- NameAndTypeOK.' . Line 447, position 3.
Schema validation warning: Invalid particle derivation by restriction -
'Derived element 'http://purl.org/dc/elements/1.1/:any' is not a valid
restriction of base element 'http://elframework.org/curriculum/elements:code'
according to Elt:Elt -- NameAndTypeOK.' . Line 447, position 3.

I'm struggling to figure out what's going on here, can anybody save me from
going crazy?