I get the following error when I try to launch:

Error during connection to database: TMySQL56Connection can not work with the installed MySQL client version: Expected (5.6), got (5.7).

I fixed it by removing libmysqlclient-dev. Cqrlog now starts & works fine (2.3).

Synaptic wont't let me remove it because Cqrlog depends on it. I went to the terminal and ran the following command:
sudo apt-get install libmariadbclient-dev-compat

It executed with some errors but removed libmysqlclient-dev.

Cqrlog runs but I get broken package messages in Synaptic. Every time another program updates, Synaptic installs libmysqlclient-dev and I start all over again.

Any ideas how to fix this?