Using tree.loadXML with servlet

currentlly I create the tree using a servlet , this works perfectlly fie in internet explorer:


when I try creating the tree with another browser (chrome , firefox) I get the following error message:

error type: LoadXML
description: Incorrect XML

Please check … mon_errors

Yeah, I’ve got the same issue, but, instead of servlet I user ASP.NET page that returns xml generated out of SQL Server. Same thing in IE everything is fine, FF and Chrome - does not work, giving

Error type: LoadXML
Description: Incorrect XML

and then

Error type: DataStructure
Description: XML refers to not existing parent

Please, read the link Olga has posted.
I can be because of incorrect content-type