Since commit 5ce6c5cff3 I get:
ERROR:engine.start:Caught crash in execpthook. Trying too execute atexit anyway
Traceback (most recent call last):
File "/home/german/repos/Agordejo/engine/jackclient.py", line 67, in _setPlaybackSeconds
currenTimeInSeconds = round(pos.frame / pos.frame_rate, 8)
ZeroDivisionError: division by zero