SBVR15 — Error message from XML Schema validator when trying a SVBR XSD

We're currently building a Corporate Vocabulary and our idea is to use the SVBR provided XML Schema for all source documents.

However, when trying the XSD-file available at the SVBR specification page in an XML Schema validator a got the error message:

Src-import.3.1: The Namespace Attribute, 'http://schema.omg.org/spec/XMI/2.1', Of An <import> Element Information Item Must Be Identical To The TargetNamespace Attribute, 'http://www.omg.org/spec/XMI/20071213', Of The Imported Document.

The XML Schema validator is available at the URL:
http://www.freeformatter.com/xml-validator-xsd.html

I have a sceen dump as well that I can send via email.

I downloaded the XSD-file and changed the namespace to match the namespace in the import element.
But it only resultet in a new fault.

Any ideas?

Fixed in SBVR v1.4

see attached Word document