When i compile the following code : counsigned char a,b,value; void main() { value = 0xF0; a = (value >> 4) && 0x0F; b = (value << 4) && 0x0F; } i get this error massage: ***FATAL ERROR L210 : I/O ERROR ON INPUT FILE EXEPTION 0021H; PATH OR FILE NOT FOUND Did anyone know what i can do??? FILE : TST.OBJ