Hello, I am using keil v7.04 on NT. I have a project for 8xC51MC2(philips) which builds fine while using IDE. When using command line , it gives warning C500 Missing device. This warning i get with each file i compile and while linking it gives ERROR L250: CODE SIZE LIMIT IN RESTRICTED VERSION EXCEEDED. I had earlier updated from v 7.0 and entered the serial no. while updating to v 7.04. Also while building the security key is connected. warm regards, Sharad Srivastava