Question is about installing English GB translation pack.

Question is about installing English GB translation pack. I am running Mac OS Sierra 10.12.1 I have downloaded LibreOffice and also the GB English translation pack. When I try run the translation pack it tells me to “choose LibreOffice 5.2 installation for which you want to install the LibreOffice 5.2 Language Pack” But the menu box that is offered, having clicked “Install” contains no options and is simply blank. I have been unable to identify the right answer. Can you help please?