Runtime errors, dlopen image not found

[paulhayes]

On osX, Running Unity 5.3
Receiving the following runtime error in example scene ( or any scene using NLua )

Couldn't open /Users/paulhayes/Workspace/LuaUnityTest/Assets/Plugins/lua52.bundle/Contents/MacOS/lua52, error: dlopen(/Users/paulhayes/Workspace/LuaUnityTest/Assets/Plugins/lua52.bundle/Contents/MacOS/lua52, 2): Library not loaded: @loader_path/liblua52.dylib
  Referenced from: /Users/paulhayes/Workspace/LuaUnityTest/Assets/Plugins/lua52.bundle/Contents/MacOS/lua52
  Reason: image not found
NLua.LuaLib:LuaLNewState() (at Assets/NLua/LuaLib/LuaLib.cs:78)

Using Assets and ProjectSettings dir in empty project. Have included script directives. So no idea what's causing this.