Using thirdparty libs cause "game module can't be loaded"

hello everyone:

recently i’m trying to use a third party library in my project which contains some head files and a lib file.
i configured the Project.build.cs file, use “PublicIncludePaths.Add” and “PublicAdditionalLibraries.Add” function to add head file folder and the lib file

but once i add new codes which contains the functions in the lib, and click the complete button in editer, then the problem comes:

  1. the complete button will disappear;
  2. then every time i open the project, there comes issue “the game module could not be loaded”

i’m using vs2015 and ue 4.11.2
the library is Oculus Platform SDK , i’m trying to achive a leaderboard feature in my project, or is there any other way to do this?