Thanks Alister for telling me that I am not alone, I had this setup model running fine on 5.07, when I transition to 6.1 I needed to re-do Manning layer in ras mapper in order to get it run first. I tried to run on 6.0 not only on 6.1, both have the same error as systeminfo not readable. Not sure its my machine or bug of the program. I will run an new model with complete setup on 6.1 to find out.