*For Linux versions of mysql-navigator*
delete or MOVE the following files:
Puzzled this out since mysql-navigator depends on old client files which do not connect to new servers.
Keep in mind this is a *hack* and as such may not work for your system.
I use '>' to mark beginning of code, and '<' to mark the end.

# mv /usr/lib/libmysqlclient.so.10 ~/mysqloldlib/
# mv /usr/lib/libmysqlclient.so.10.0.0 ~/mysqloldlib/
# mv /usr/lib/libmysqlclient_r.so.10 ~/mysqloldlib/
# mv /usr/lib/libmysqlclient_r.so.10.0.0 ~/mysqloldlib/
then SYMLINK the newer client libs to where those files were:
# cd /usr/lib
# libmysqlclient.so.14.0.0 libmysqlclient.so.10
# libmysqlclient.so.14.0.0 libmysqlclient.so.10.0.0
# libmysqlclient_r.so.14.0.0 libmysqlclient_r.so.10
# libmysqlclient_r.so.14.0.0 libmysqlclient_r.so.10.0.0