Notwithstanding "Good Luck's" contribution, any transferred file should be seen in the file explorer, whether there is an application that can handle the file or not.
A quick Google search provides some interesting similar problems:
http://www.modaco.com/forums/topic/375974-usb-connectivity-after-lollipop-update/
http://androidforums.com/threads/hudl2-lollipop-5-1-update-no-longer-reading-ext-usb-drive.980176/
The $64,000 question: have you upgraded to Lollipop?
Whatever, it may still be worth posting in the above specialist Android forums.
This MAY be of some help:
https://answers.microsoft.com/en-us/windows/forum/windows_7-hardware/unable-to-link-hudl-from-tesco-to-the-computer/4a676d6c-a4fb-4c02-8a3c-d59145421f61
HTH
acp
March 2017