[Cube] temperature

[Arthur Busbey]

HI,
   I moved my cube to an environment with more variable temperature so 
decided to finally add an application for detecting temp - I chose 
Thermograph. Problem is - when I run it I am told there is no 
temperature sensor (running 10.4.2 on the cube and it has the 
original CPU and hard drive). I tried a few other aps with the same 
result. Any idea what gives?
Thanks,
Art Busbey