ProgDVB 5.x or 6.x cannot change channel

#1
I have ProgDVB 6.01.01 and BroadLogic 2030 card . The problem is everytime after change to a different channel, I got black screen. If I close the ProgDVB at this point and open it again, the channel can be played. So now everytime after I change a channel, I have to close Progdvb and re-open it.
Anyone had this issue?
Anyone have a solution?

Note: the last version that have not this problem and all things Ok was ProgDVB 4.85.3
i have windows XP PRO SP2