windows 7 media center and SiliconDust HomeRun Pro

Can some help me configure Comodo Firewall (latest free version)

I am using windows 7 media center with a SiliconDust HomeRun Pro network tuner.
Without the firewall installed, WMC can detect the network tuner.
Once I install CFW, it seems to prevent WMC from doing so.
WMC just ends up crashing.

What configuration changes do I have to do to allow WMC to work properly?
please let me know what info you need to diagnose my problem.
thanx

Try adding the executable of WMC and the installation folder of SiliconDust HomeRun Pro network tuner to the exclusions of Detect shellcode injections (i.e. Buffer overflow protection).