I imagine you are running in "production" mode. You could try
"development" mode to get tracebacks in the browser.
I'm not sure why logTracebacks isn't working for you. Can you try
running the following script on your machine and see if successfully
logs errors?
http://www.dowski.com/python/logtest.py
That script logs tracebacks on my system. Just visit
http://localhost:8080/anerror to trigger a 500 error. It should get
logged.
Maybe you could paste your config somewhere if that doesn't get you any
further.
HTH,
Christian
http://www.dowski.com