Hi Petr,
having trouble starting CQRLOG on a fresh install of debian 9 64 bit.
First I had to install libmariadb-dev-compat package but after that I now get:

Error during connection to database: TMySQL56Connection can not work with the installed MySQL client version: Expected (5.6), got (5.5.1).

Any ideas?

Thanks & 73

Log follows:

vittorio@ik1rac:~$ cqrlog --debug-1

(cqrlog:4127): Gtk-WARNING **: Impossibile trovare il motore del tema in module_path: «adwaita»,

(cqrlog:4127): Gtk-WARNING **: Impossibile trovare il motore del tema in module_path: «adwaita»,

**** DEBUG LEVEL 1 ****

SSL libraries:
/usr/lib/x86_64-linux-gnu/libssl.so.1.0.0
/usr/lib/x86_64-linux-gnu/libcrypto.so.1.0.2
Loading libmysqlclient: /usr/lib/x86_64-linux-gnu/libmariadbclient.so.18
**************************
MySQL version: 10.
**************************
**********************************
MySQL version assigned: 5.6
**********************************
Loaded 73758 LoTW users
Loaded 103678 eQSL users
Loaded 44537 SCP calls
*
User home directory: /home/vittorio/
Program home directory: /home/vittorio/.config/cqrlog/
Data directory: /home/vittorio/.config/cqrlog/database/
Memebers directory: /usr/share/cqrlog/members/
ZIP code directory: /usr/share/cqrlog/zipcodes/
Binary dir: /usr/bin/
Share dir: /usr/share/cqrlog/
TConnection to MySQL: 5.6
*
56 us states loaded
WARNING: obsolete call to RecreateWnd for TfrmDBConnect
Warning: TWinControl.DestroyHandle frmDBConnect:TfrmDBConnect Handle not Allocated
/usr/sbin/mysqld --defaults-file=/home/vittorio/.config/cqrlog/database/mysql.cnf --datadir=/home/vittorio/.config/cqrlog/database/ --socket=/home/vittorio/.config/cqrlog/database/sock --port=64000
Trying to connect to database
2017-07-22 14:41:56 140480187339328 [Note] /usr/sbin/mysqld (mysqld 10.1.23-MariaDB-9+deb9u1) starting as process 4130 ...
TMySQL56Connection can not work with the installed MySQL client version: Expected (5.6), got (5.5.1).
Trying:1
Trying to connect to database
TMySQL56Connection can not work with the installed MySQL client version: Expected (5.6), got (5.5.1).
Trying:2
Trying to connect to database
TMySQL56Connection can not work with the installed MySQL client version: Expected (5.6), got (5.5.1).
Trying:3
Trying to connect to database
TMySQL56Connection can not work with the installed MySQL client version: Expected (5.6), got (5.5.1).
Trying:4
Trying to connect to database
TMySQL56Connection can not work with the installed MySQL client version: Expected (5.6), got (5.5.1).
Trying:5
Trying to connect to database
TMySQL56Connection can not work with the installed MySQL client version: Expected (5.6), got (5.5.1).
Trying:6
Trying to connect to database
TMySQL56Connection can not work with the installed MySQL client version: Expected (5.6), got (5.5.1).
Trying:7
Trying to connect to database
TMySQL56Connection can not work with the installed MySQL client version: Expected (5.6), got (5.5.1).
Trying:8
WARNING: obsolete call to RecreateWnd for TfrmDbError
Warning: TWinControl.DestroyHandle frmDbError:TfrmDbError Handle not Allocated