[tor-relays] Tor-arm failure

[Arisbe]

Hello people,

I'm not a python programmer so I need some help with a problem. I have a 
number of Tor nodes and some bridges.  Occasionally, when I install 
tor_arm I get a divide by zero message as follows:

Exception in thread Thread-69: Traceback (most recent call last):

File "/usr/lib/python2.7/threading.py", line 801, in __bootstrap_inner 
selt.run()

File "/usr/share/arm/util/sysTools.py", line 517, in 
runnewValues["cpuAvg"] = total CpuTime / uptime

ZeroDivisionError: integer division or modulo by zero

Exception in thread Thread-70 ......

I'm running debian jessie in this most recent example.  2 G memory, 20 G 
hdd.  This is a bridge with only some daily use but typically 10-12 
circuits.

Does someone have experience debugging this problem?

Thanks!