Thanks for responding. I changed out four switches. Three two-way's were replaced with three-ways and one two-way with a safety two-way. I just checked and every switch is set to the type that it is(none set to auto) but strangely, the rear sliders which I haven't assigned to any function in either of the two models I have in the radio were not set to proportional. They may have been set to auto or none. I know you had this problem many years ago but do you remember how often you would get the error message on boot up and experience the switches actually not working or working intermittently? The video I posted was from yesterday and it was the first time I would get past the boot up error screen and actually have the switches not work. The four or five times before that, I would get past the boot error screen by hitting ok and then everything was normal. I've only had the radio for about six weeks but have been playing with it almost everyday since getting it and the error screen only started at around week four or five. I changed the SD card yesterday and replaced the config, device and update folders with ones from a friends ds-24 thinking something may have been corrupted. Thanks.