please check the following:
1. did you add the ID of your sensor in the configuration tap of the 1wire sensor.
2. what does Linux report if you connect to your pi by ssh (putty)
and give then the following command cat /sys/devices/w1_bus_master1/28-0004442100FF
<28-0004442100FF> should be your sensor ID which you see in the table
If this is set and it still does not work you need to check if your sensor does work under Linux
0f 00 4b 46 ff ff 06 10 0c : crc=0c YES
0f 00 4b 46 ff ff 06 10 0c t=7375
Did you add the 4k7 resisitor ?
Here is a good description:http://www.google.de/imgres?imgurl=http ... CD4Q9QEwAw