I've recompiled my kernel with support for the BT848, following the instructions for the driver (modifying my /usr/sys/linux/drivers/usb/ Config.in and Makefile), and then running make modules. However, whenever I plug in the WinTV model 4001 into my USB port, I get the following output: usb.c: USB Device 2 (vend/prod 0x573/0x4d00 is not claimed by any active driver. Thanks.