Java Programming

I am getting the following waring in the struts-config.xml file

Warning(3,16): <Line 3, Column 16>: XML-24538: (Error) Can not find definition for element 'struts-config'

Warning: Invalid value for property "property" on component "property": Another set-property element for this property already exists. Invalid value for property "property" on component "property":
Another set-property element for this property already exists. Invalid value for property "property" on component "property":

and the line 3 in the file is the tag <struts-config>

has anyone encountered this problem or is there is solution to eliminate the warning, i have validated the xml file wihich is good, i have validated against DTD, which is also good.

Thanks in advance
Victor