Hi, I am having an issue regarding R3.4.3. I am launching R instance from RDotNet using following two statements: REngine.SetEnvironmentVariables(rPath, rHome); this._RServer = REngine.GetInstance(); Where rPath = "C:\Program Files\R\R-3.4.3\bin\x64" rHome = "C:\Program Files\R\R-3.4.3" As soon as the second statement (REngine.GetInstance() ) executes I get following error: " *The Program can't start because Rplpack.dll is missing from your computer. Try reinstalling the program to fix this problem.*" I checked, Rplpack.dll is in my rPath location. I did not get this error in the older versions of R. Only R3.4.3 is having this issue. Please help. -- Thanks and regards, Anil [[alternative HTML version deleted]]