Heyho i would try your Plugin to check how it´s works, because it looks really nice.
I put the “GhostMesh” Folder in the C:\Program Files (x86)\Epic Games\4.10\Engine\Plugins.
Then i start a New Thrid Person Project it work´s, i check the Plugin Window and see in the Others section GhostPlugin and activate that.
Must restart for that and by the launch always become this message: .
I put also in the project plugins folder (new created one) but I getting also the first message and after this message.
Check with more different Project also new created one, also with both version, always the same.