SageTV, Vista and Service Mode not working

Has anyone run into this? Or is anyone even using this setup?
I have my USB-UIRT connected to my SageTV server running Vista. This is a new install of Vista and a "restore" of SageTV from my previous XP install. I really only copied the WIZ.BIN from the old install. So it's really a fresh install.
If I run SageTV in service mode, the USB-UIRT will EITHER receive signals OR send, but never both. Usually, it will send and not receive. This all worked flawlessly on XP (I know, I know, but I've gone down the path). I am hoping to solve this as everything else is working quite well.
If I run SageTV NOT in service mode, everything works as expected.
Any thoughts?
Thanks
I have my USB-UIRT connected to my SageTV server running Vista. This is a new install of Vista and a "restore" of SageTV from my previous XP install. I really only copied the WIZ.BIN from the old install. So it's really a fresh install.
If I run SageTV in service mode, the USB-UIRT will EITHER receive signals OR send, but never both. Usually, it will send and not receive. This all worked flawlessly on XP (I know, I know, but I've gone down the path). I am hoping to solve this as everything else is working quite well.
If I run SageTV NOT in service mode, everything works as expected.
Any thoughts?
Thanks