cvc-elt.1 cannot find the declaration error from a built jar, works correctly however from eclipse

I have a java program that I first had running in eclipse and it is working correcty when I load and parse an xml file.

I just built it as jar file and am running and now the same xml file I am getting this error

cvc-elt.1 cannot find the declaration for a certain element.

I know my xml is good becuase it is the same file that worked in eclipse.

Is ther any special jar I need to include in my jar manifest so that the xml will parse correctly.

Thank you so much!