Wow, I'm not having the easiest time with my new system. Still hunting TFLOPs. So, I downloaded the 318MB file from the link you posted and I tried running it. The filename was "win10-64bit-radeon-software-adrenalin-edition-18.2.1-feb7.exe". It looked very familiar to the install from the 848MB Allin1 .zip file I downloaded from ASRock. I can't remember exactly what happened but at some point I had Windows check for updates on my "Display Adapters" in "Device Manager" because all it said was "Microsoft Basic HD Display Adapter" or something of that sort. Thankfully, Windows 10 did start "Downloading Drivers" and got me officially to the "AMD Radeon Vega 8 Graphics" recognition by the system.
So, now I try your software again and it seems to be recognizing the fact that an OpenCL capable device is present but it goes into an infinite "Not Responding" state as it's trying to find the new device. I'm not sure at this point whether your software is the issue or my computer system. Please help if you can. Thank You!
Edit: One last thing I might as well mention (if it matters). Right now, I'm running my system with 1x8GB 2800MHz memory stick in single-channel mode. I'll be doubling up here soon to see if anything changes.