@ylsf : please help us out =) what device what version and :

1) repositories you have
2) did you have beta 1 of canola2 installed? or Canola1 ? Unninstalled them correctly?

It seems that the installation process failed, and you are trying to run a corrupted version (missing the config file)

Anyways.. I will pass this to the guys to see if they can be of more help!

BR