Hi Gary,

the file multi_var_pause.xar is just the example created using the widget.
The differing arrows might be caused by the use of different fonts or a different slick slider version. You can change the widget to use your manually uploaded version (and fonts) by changing the addresses in the placeholder on the first page of the widget.
Open the widget in Xara.
Select the placeholder.
Go to the web properties placeholder tab and open the HTML code (head) code editor.
Change the three occurrences of https://cdn.rawgit.com/kenwheeler/slick/a2aa3fec/slick to the relative path on your server (for example addons/slick if that is the position relative to the htm files created/uploaded by Xara).
I'm not quite sure if you will be able to fix the arrow appearance, since whatever I tried they looked different in different browsers...
Good luck!