help, here is the message I get
Dec 29 14:39:48 iMac27.local installd[20319]: PackageKit: Install Failed: Error Domain=PKInstallErrorDomain Code=112 "An error occurred while running scripts from the package “autocadLt2013.pkg”." UserInfo=0x7fe51941a780 {NSFilePath=./postflight, NSURL=file://localhost/Volumes/AutoCAD%20LT%202013%20Installation/Install%20AutoCAD%20LT%202013.mpkg/Contents/Packages/autocadLt2013.pkg, PKInstallPackageIdentifier=com.autodesk.autocadlt2013, NSLocalizedDescription=An error occurred while running scripts from the package “autocadLt2013.pkg”.} {
NSFilePath = "./postflight";
NSLocalizedDescription = "An error occurred while running scripts from the package \U201cautocadLt2013.pkg\U201d.";
NSURL = "file://localhost/Volumes/AutoCAD%20LT%202013%20Installation/Install%20AutoCAD%20LT%202013.mpkg/Contents/Packages/autocadLt2013.pkg";
PKInstallPackageIdentifier = "com.autodesk.autocadlt2013";
}
Dec 29 14:39:49 iMac27.local Installer[20275]: Install failed: The Installer encountered an error that caused the installation to fail. Contact the software manufacturer for assistance.
Dec 29 14:39:49 iMac27.local Installer[20275]: Displaying 'Install Failed' UI.
Dec 29 14:39:49 iMac27.local Installer[20275]: 'Install Failed' UI displayed message:'The Installer encountered an error that caused the installation to fail. Contact the software manufacturer for assistance.'.
What operating system are you running on? i.e. 10.7/10.8/10.9?