MySQL 5.1.54 Ubuntu 11.04
I\'am try to change bin log directory in my.conf as:
[mysqld] log_bin=/home/developer/logs/mysql/mysql-bin.log
I had a similar problem when I was trying to change the datadir variable during a fresh install. The solution in my case was to run the first time start up with log-bin disabled. After that I was able to enable it again using the new path ...