Various dates in march 2013. I had a date problem when I upgraded, so removed npvr entirely, deleted the programming files folder and reinstalled.
Server: Ci5 2500k, 3GB, Windows Server 2012, nPVR 3.5.7. 2xWinTV-DVB-T USB, 1xWinTV-DVB-T PCI, 2 x BlackGold DVB-T, 1xPCTV290E and 1xPCTV460E on Astra 28.2 E.
clients: RPI2, Acer R3700, PCH-A110, NUC, 3xSamsung Smart TV