nrecord appears to die randomly while idle, sometime after reloading the recording schedule (but I can't tell whether it has anything to do with the reload or not). if you have a C:\TEMP directory, check for any crash dump files there; if you don't have it, create it and see if you get a crash dump the next time NRecord dies. also check in your event viewer, see if you can find any nrecord or .net crash events in the system or application logs. post whatever you find.
server: NextPVR 5.0.7/Win10 2004/64-bit/AMD A6-7400k/hvr-2250 & hvr-1250/Winegard Flatwave antenna/Schedules Direct main client: NextPVR 5.0.7 Desktop Client; LG 50UH5500 WebOS 3.0 TV