Strange output from python_pin tool img_load.py

[tosanjay]

Hi,
I just started using Python_Pin on Ubuntu 14.04 (gcc version 4.8.4) with latest Pin 2.14 release. While playing with given examples, I used img_load.py with evince and I got the following response:

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> pin -t obj-intel64/Python_Pin.so -m examples/img_loads.py -- /usr/bin/evince
E: Could not determine os release
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I accept that I did not dig further to find a probable cause of this and rather thought of asking here. So, is this response coming from Pintool itself or it is something to do with python_pin?

Thanks
-sanjay