Have seen these on 3 series and 4 series. Cant pin down what causes it. A few years ago we did have a case where the TV Presets v1 was slowly eating up RAM and eventually the processor would just completely lockup- I did get alot of these errors in that case. ATSG couldnt come up with a solution other than stop using those presets or put the modules in another slot and reboot it nightly.?