6.48.x ok - 6.49 no find channel

#1
Hello sorry for my english but i use google translate.
I have a Pinnacle PCTV 310i with ProgDVB 6.48.x version the channel scan is done regularly and with as many. But with the 6.49.x versions can't find any channels
how can I fix this?

I use win7 32bit

Driver: BDA Pinnacle PCTV 713x Tuner BDA DVBT Tuner
ProgDVB 6.48.x: Auto - OK
ProgDVB 6.49.x: Auto, Generic BDA, Microsoft compliant BDA driver - don't work