Hi Sean,
It read “Unfortunately ‘unrealproject’ has stopped” whenever the distribution version was launched on a device, wasn’t a problem when distribution was turned off. Managed to fix it by deleting the Build, Binary, Saved and Intermediate folders from the directory as suggested by a response to this thread: https://answers.unrealengine.com/questions/177637/47-android-shipping-crash-on-launch.html
So I’ve sent it to my HTC tester, should finally have an answer for you in the next day or 2, Thanks!