I am totally sure that you have the same problem like in this post
You're passing to the xml filter contains two XML documents (two consecutive "note" elements). The xml filter can only parse one document at a time. Each XML document has exactly one single root element. It encloses all the other elements and is therefore the sole parent element to all the other elements. ROOT elements are also called document elements.
I think your problem is the element which appers multiple but it's just allowed to put it one time in the whole file. Maybe put an selfmade element before the first <testCase> and after the last </testCase> to test this.
For me it worked because my xml file contains one root element (just one time <testCase> [your root element]), i used the xml file you posted at 5th november.
Best regards