Multiple TV tuners

[TBrieaddy]

Does anyone know if multiple TV tuners will work with DMF4? I just added a ADS Instant TV Deluxe USB to my computer which already has a Hauppauge PVR 150 PCI board. I use this combination with Beyond TV4. When I open up DMF4 - the program will hang or crash. If I remove the USB tuner (ADS) - DMF4 works as usual. Thank you.