First problem with my K3 in five years. I have no MENU or CONFIG display. NADA... I have an "ERR KEY" display. I reloaded the latest Software via the K3 utility program, including the DSP. I did not see anything wrong in the CONFIGURATION file. The utiliuty program says the down load was satisfactory. Any ideas where I look? 73 de Jack / W7LD / "Lucky Dog"