When I package my project (win64 platform), it show me error as follow
ProcessResult.StdOut: Using Visual Studio 2015 14.0 toolchain (C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC) and Windows 8.1 SDK (C:\Program Files (x86)\Windows Kits\8.1).
ProcessResult.StdOut: ERROR: Unable to find plugin ‘SteamVR’ (referenced via Y77_421.uproject → MotionCapture.uplugin). Install it and try again, or remove it from the required plugin list.
If you are recompiling the full engine, make sure the plugin is present in Engine/Plugins/ (or in YourProject/Plugins/). I just had a similar issue with another plugin and copying the plugin from the Epic Launcher UE retail build to my project Plugins folder fixed it.
The only solution I found was to install my dependencies in the Engine, but keep in mind that installing plugins on the Engine downloaded from the Epic Launcher will result in another error: “This type must derive from the ‘ModuleRules’ type defined by Unreal Build Tool.”
To be able to install additional plugins to the Engine, you will have to build it yourself from github.