Reinstalled Stretch, followed instructions - getting errors


Followed the instructions with the new changes to use Openssl Jessie: (I did not cut the tab)

root@raspberrypi:~# python /usr/local/share/zymkey/examples/

Exception AssertionError: AssertionError(‘bad return code -1’,) in <bound method Zymkey.del of <zymkey.module.Zymkey object at 0x76aab950>> ignored
Testing data lock…
Traceback (most recent call last):
File “/usr/local/share/zymkey/examples/”, line 6, in
dst = zymkey.client.lock(src)
AttributeError: ‘NoneType’ object has no attribute ‘lock’


Is there a way to reset it? Nothing is working now


I did the following twice: (without change)

  1. You recheck the Hardware Installation
  2. You repeat the I2C configuration process which has been updated recently (Turn i2c ON-OFF-ON, then reboot).



We are working through the Stretch release in more detail to understand what has changed in the kernel. We will get back to you as soon as we have something concrete.

Thanks for your patience.