I integrated Adcolony ads in my game maker Android Game,and when im trying to build .apk ,i got the following *.aar files at extension error and build failed.

System.IO.IOException: The file ‘D:/game_531CA3FB_689AB3CD\Android\default\game.***.***\elibs/adcolony-3.3.5.\adcolony-3.3.5.aar’ already exists.
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.File.InternalCopy(String sourceFileName, String destFileName, Boolean overwrite, Boolean checkHost)
at System.IO.File.Copy(String sourceFileName, String destFileName)
at Igor.AndroidUtils.(YYDictionary`2 , String )
at Igor.AndroidUtils.(YYDictionary`2 , String , Boolean , String )
at Igor.AndroidBuilder.Package()
Igor complete.

How to solve this *.aar files at extension problem in Game Maker?