RGCOPY relies on several PowerShell modules. A malfunction of these modules might directly result in a failure of RGCOPY. Therefore, you should make sure that you always use the newest version of:
The most important feature of RGCOPY is deploying an ARM template. This might fail for various reasons that are not under control of RGCOPY. In case of an error, check the following log files:
Azure is permanently releasing new resource types and new features for existing resources. RGCOPY only supports a limited set of resource types. It is simply impossible to support all of them. In particular, RGCOPY does not support *classic* VMs. Some features are only supported for very specific boundary conditions. Adding support for further resource types to RGCOPY might or might not happen in the future.