This looks great and I appreciate the time you've put into this.
Just a quick try on y office pc (with no tuners), each time I check the box in config and restart NPVR, it's unchecked again and I don't get the option to scan.
I'll give this a try at home tonite and play with it.
Custom Built ASUS M4A79T Deluxe - AMD X4-955-Corsair XMS3 8GB DDR3 Memory-XFX HD-487A-ZHFC Radeon HD 4870 1GB Vid card - HAF922 Case-1 WD 1TB, 1 Seagate 1TB and 1 Rack Drive-InfiniTV4 & HDHomerun Tuners- Creative Soundblaster X-Fi Titanium- Acer H233H monitor-1 ATI DCT-W7 X64 Ultimate
#2-M4A79XTD EVO-AMD X4-925-4GB Corsair Ballistix Tracer DDR3 1600-Antec 750 PSU-Sony DVD/RW-2-1TB HD's- Zalman CNPS9700 LED heatsink-HVR2250 & 1600 with HDHR in a Coolermaster 690 II case-W7 x64 Ultimate