Hi, Normally Keil µV2 creates a hex file during less than a second. My newest project is my first project whose hex file contains more than one KB of data. After booting my PC creating this hex files does also take only about a second. But if I want to compile the hex file a second time I must wait more than a minute. So I cannot change the program without rebooting my PC if I do not want to wait a minute (and rebooting does also take time :-( ). What can I do against this problem? Thanks!!!