"Registry" is a known issue. It will be fixed in the next release expected by the end of this June.
Regarding non-function, have you checked if your system is able to support Vive Pro’s SRWorks SDK functionalities followed by these steps, https://developer.vive.com/resources/knowledgebase/vive-pro-srworks-sdk-qa/?
Regarding supported version, it needs Unity (5.5.3 or later) and this version doesn’t support SteamVR unity plugins 2.0.1, please download SteamVR unity plugins 1.2.3 package if you needs, https://github.com/ValveSoftware/steamvr_unity_plugin/releases/tag/1.2.3