When I use this extension, I found that when the content contains &, the xml can be exported but can't open.

Then i Found that the type of the attribute is a text line, and in the code os ezxmlupload, it just output the content, so i change the code of ezxmlupload.

extension/ezxmlexport/classes/datatypes/ezstring/ezstringxmlexport.php
Line 49:
Change from

return $this->contentObjectAttribute->content();

To

return "<![CDATA[\n"


           .$this->contentObjectAttribute->content()


           . "]]>\n";

also, you can change another file to void this problem.

extension/ezxmlexport/classes/datatypes/eztext/eztextxmlexport.php
Line 33:
Change form

return $this->contentObjectAttribute->content();

To

return 

           "<![CDATA[\n"


           .$this->contentObjectAttribute->content()


           . "]]>\n";