[krustyreturns]

That's a strange one.  The error you posted shows that the wmc background service that performs recordings is what is failing (Windows Media Center Receiver Service).  Looks like when that happens it takes out serverwmc too.  It explains why you are not getting all the recordings that you should be getting since its this recording service that actually records, not serverwmc.  Googling wmc and the error (and not serverwmc) and I found

https://social.technet.microsoft.com/For...itpromedia

but the error is not exactly the same.  Is your tuner a usb tuner?