The only major difference is one had an Intel Motherboard/CPU and the new system has a Ryzen Motherboard/CPU.
Anyway, Here is AMD instructions on installing Professional GPU Drivers: How to Install Radeon Pro Software on a Windows Based System | AMD
Most likely you have already followed this method, but just in case you missed something.
Here is AMD latest Release notes for the driver you downloaded.AMD Radeon Pro Software for Enterprise 18.Q4 for AMD Remote Workstation Release Notes | AMD
The fastest and most efficient way to get useful answers is to contact Radeon Pro Software technical support, your error report will be the basis of your solution, please note that AMD offer to Radeon Pro customers technical support by phone 24/7. More help in the link bellow
All the best