simpletk - 2010-04-01

I have Xml copy editor 1.2.0.6 and I use this validation scheme:

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="foo.xsd"

After validation, at the bottom there is warning icon but no text of actual warning. I don't know what program is trying to tell me.