Cannot Re-Install MySql on 10.8.x

Question

I use MySql with MailSteward Pro; I did a clean OS X install a few weeks back and am trying to get back up and running. Basically I followed the steps found here, to move my MailSteward database to the new volume:
http://mailsteward.com/nickstek/?p=22
I was never able to set permissions properly, and, after a time decided to delete MySql and start over. I did so using the following steps:
sudo rm /usr/local/mysql
sudo rm -rf /usr/local/mysql*
sudo rm -rf /Library/StartupItems/MySQLCOM
sudo rm -rf /Library/PreferencePanes/My*
rm -rf ~/Library/PreferencePanes/My*
sudo rm -rf /Library/Receipts/mysql*
sudo rm -rf /Library/Receipts/MySQL*
And using your text editor of choice:
Edit /etc/hostconfig and remove the line MYSQLCOM=-YES-
If you still cannot install or run a different version of MySQL, you might have to issue one last command in the Terminal2:
sudo rm -rf /var/db/receipts/com.mysql.mysql*
Now, when I reinstall from the DMG package, I get the error message that the MySql Database Server installation was not found. Running 'mysqladmin' from terminal results in an error stating that the command was not found. I have tried to run the installer package again but get these errors:
Jan 16 13:55:14 Stephens-MacBook-Pro.local installd[5941]: PackageKit: ----- Begin install -----
Jan 16 13:55:28 Stephens-MacBook-Pro.local installd[5941]: PackageKit: Install Failed: Error Domain=PKInstallErrorDomain Code=112 "An error occurred while running scripts from the package “mysql-5.1.67-osx10.6-x86_64.pkg”." UserInfo=0x7f9b0364d230 {NSFilePath=./preflight, NSURL=file://localhost/Volumes/mysql-5.1.67-osx10.6-x86_64/mysql-5.1.67-osx10.6 -x86_64.pkg, PKInstallPackageIdentifier=com.mysql.mysql, NSLocalizedDescription=An error occurred while running scripts from the package “mysql-5.1.67-osx10.6-x86_64.pkg”.} {
              NSFilePath = "./preflight";
              NSLocalizedDescription = "An error occurred while running scripts from the package \U201cmysql-5.1.67-osx10.6-x86_64.pkg\U201d.";
              NSURL = "file://localhost/Volumes/mysql-5.1.67-osx10.6-x86_64/mysql-5.1.67-osx10.6-x86_ 64.pkg";
              PKInstallPackageIdentifier = "com.mysql.mysql";
Jan 16 13:55:28 Stephens-MacBook-Pro.local Installer[5934]: Install failed: The Installer encountered an error that caused the installation to fail. Contact the software manufacturer for assistance.
Jan 16 13:55:28 Stephens-MacBook-Pro.local Installer[5934]: Displaying 'Install Failed' UI.
Jan 16 13:55:28 Stephens-MacBook-Pro.local Installer[5934]: 'Install Failed' UI displayed message:'The Installer encountered an error that caused the installation to fail. Contact the software manufacturer for assistance.'.
Can anyone help me get this re-installed and up and running properly ? Thanks!

Answer 1

I got the same problem when re-installing mysql-5.1.65-osx10.6-x86_64 and was struggling for awhile. Then I switched to install the latest version, which is mysql-5.1.68 and that worked!
But I thought this might be something related to the quarantine of MacOS. I have got a message from my /var/log/system.log:
Mar 22 02:25:04 Hochi-Air kernel[0]: exec of /Volumes/mysql-5.1.65-osx10.6-x86_64/mysql-5.1.65-osx10.6-x86_64.pkg/Contents/R esources/preflight denied since it was quarantined by Google\x20Chrome and created without user consent, qtn-flags was 0x00000007
I have googled it but there was no luck for me to clear the quarantine flag for the preflight file by issuing:
xattr -d com.apple.quarantine /Volumes/mysql-5.1.65-osx10.6-x86_64/mysql-5.1.65-osx10.6-x86_64.pkg/Contents/R esources/preflight
Maybe copying the installation .pkg file would solve this.