Dear Frorian,
Thank you very much for your help. As I said, I would like to use spheno, and now I am trying to make "Scotogneic model", which comes from SARAH. Version of my mathematica is version 8, and then as you advised, I turned off the loop corrected decay as MakeSPheno[IncludeLoopDecays->False]. Then, I tried to compile outputs of SARAH.
When I did not changed makefile produced by mathematica (/Scotogeneic/Makefile),