XML Reader app not working

Hi, I have SDL Trados Studio 2019 SR2 - 15.2.7.2849 installed and have down loaded the XML Reader app from https://appstore.sdl.com/language/app/xml-reader/845/

 

However, when I open the app within Trados Studio and try to drag my Analyze report XML files to the dialog, nothing happens, the files do not show in the dialog.

 

Any help appreciated

 

Hugh