why SOM of msxml4 can't load this schema?

[=?gb2312?q?TiTi?= <zhoutgtt@yahoo.com.cn>]

the schema is:
http://www.web3d.org/specifications/x3d-3.0.xsd

when use SOM to load as:
...
SchemaCache  =  new 
ActiveXObject("Msxml2.XMLSchemaCache.4.0"); 
SchemaCache.add("","x3d-3.0.xsd");
...

pop up a messageBox report that there are some
error.but the schema is
well-formated.how to solution?


titi

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