https://drive.google.com/open?id=1uhEt5MtUvaH0Xn1T3TksZK2g2BwZ8coB
Thanks Nat. Well here is the the link in case anyone would be kind enough to check for me. In case it makes a difference the first time I exported it, it worked ok, but then on subsequent attempts I've had this problem, even starting the whole project from scratch again.