I strongly recommend that the feature released version of ATK/VNL can be just as some other software,for instance , matericals studio 4.3. when the power is off abruptly, the calculated results can be saved automatically. if we restart the computer, the unfinished calculation can be recontinued automatically.In ATK/VNL, I think this function is quiet complex and not satisfied! I have just wasted 10 days to calculate a two probe system because of a sudden power off!