I'm not sure if this problem is caused by the w3 hosted XMLSchema.dtd
file, but in validating a file which imports the 'xmldsig-core-
schema.xsd' (which in turn references the afformentioned dtd), I get
the following warning message:
"Attribute 'xmlns' has already been declared for element 'schema'"
This is from line 121 of the XMLSchema.dtd file located here:
http://www.w3.org/2001/XMLSchema.dtd
I don't speak dtd, but just removing line 121 fixes the problem - I'm
curious if there's a less heavy-handed way of fixing this issue.
thanks,
-lev