https://forums.unrealengine.com/core/create-content/text/
Good news finally I had some time and incentive to package the plugin correctly. I refactored many things, including separating out the HID reading part into its own plugin (in case I want to use HIDAPI in other C++ code with UE4, this was necessary) and I found a way to finally really get rid of the “missing precompiled manifest” error when the plugin is put into the engine plugins folder. As a result though, the size of the download will be drastically larger. Update is coming soon.