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Removed the old installation as explained here:

Installed the package contained in the mysql 5.1.67 DMG downloaded from Installed the preference pane item Installed the startup item [THIS FAILED]

MySql will not load, it's preference pane show the error message displayed below:

 The MySql database server installation was not found. 
 Please make sure the /usr/local/mysql/bin/mysqladmin file is present

I don't have much familiarity with unix commands so I'm not clear how to troubleshoot this further.

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Is /usr/local/mysql/bin/mysqladmin present? If so what does running it in Terminal show? – Mark Jan 16 '13 at 13:12
UPDATE: I downloaded the 32-bit package (I had previously installed the 64 bit one) and it is installed. However, it will not run still. The error message in the preference pane now says: "Warning - The /Users/snp/emaildb/ directory is not owned by the 'mysql or _mysql user" – snpower Jan 16 '13 at 15:24
That user directory is nothing to do with a plain mysql install- you must have some configuration or other program using it (and probably mysql) – Mark Jan 16 '13 at 15:48

Try to uninstall the lates version completely and install the new one. According to your error log i think that you have another mysql server running on your machine. Try to find it out and uninstall it.

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Ok so I did a complete uninstall again. Also uninstalled Logitech Media Server which is the only other thing on my system using sql. Rebooted. Did another install of the x64 bit version. Now I am back to getting the message that the MySql Database Server installation was not found, despite the fact that the installer reported a successful install. – snpower Jan 16 '13 at 18:41
I tried another install, this one fails and reports these errors: (can't display them not enough characters available) – snpower Jan 16 '13 at 18:45
try to make an update on OS. may be this can help you – Festus Tamakloe Jan 16 '13 at 20:34

I got the same problem after installing mySql through homebrew brew install mysql.

After digging for a while, I realized that the problem was a missing symbolic link.

Since my mySql was installed in /usr/local/mysql-5.6.12-osx10.7-x86_64 and not in /usr/local/mysql as expected, all I did was create the symbolic link to map this missing path:

cd /usr/local
sudo ln -s mysql-5.6.12-osx10.7-x86_64 mysql

Now I can access /usr/local/mysql, and the mySql on System Preferences works fine.

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