Looks like it could have been Worse. It was trying to rename all the stock apps too ???? WTF ???????
toCAD_Mac_2018.1_Update_Combo.pkg#autocad2018.pkg (destination=/var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/C/PKInstallSandboxManager/62CE246C-FC49-477C-A627-E437C37A241A.activeSandbox/Root/tmp/_adsk_22.0.48.478/autocad2018.O048.M.478, uid=0)
2018-04-26 08:45:47-04 Russells-iMac installd[763]: PackageKit: Extracting file://localhost/Volumes/O048.M.478.acad.mac.x64.comboupdate/AutoCAD_Mac_2018.1_Update_Combo.pkg#AdSSO-v2.pkg (destination=/var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/C/PKInstallSandboxManager/62CE246C-FC49-477C-A627-E437C37A241A.activeSandbox/Root/Library/Application Support/Autodesk/AdSSO, uid=0)
2018-04-26 08:45:47-04 Russells-iMac installd[763]: PackageKit: Moving directory /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/C/PKInstallSandboxManager/62CE246C-FC49-477C-A627-E437C37A241A.activeSandbox/Root/tmp to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/C/PKInstallSandboxManager/62CE246C-FC49-477C-A627-E437C37A241A.activeSandbox/Root/private/tmp in sandbox to account for symlink
2018-04-26 08:45:47-04 Russells-iMac installd[763]: PackageKit: prevent user idle system sleep
2018-04-26 08:45:47-04 Russells-iMac installd[763]: PackageKit: suspending backupd
2018-04-26 08:45:47-04 Russells-iMac installd[763]: PackageKit: Executing script "./preinstall" in /private/tmp/PKInstallSandbox.N8xWeb/Scripts/com.autodesk.AdSSO-v2.ji0aLv
2018-04-26 08:45:47-04 Russells-iMac installd[763]: ./preinstall: AdSSOPackageInstaller: preinstall /Volumes/O048.M.478.acad.mac.x64.comboupdate/AutoCAD_Mac_2018.1_Update_Combo.pkg /Library/Application Support/Autodesk/AdSSO / /
2018-04-26 08:45:47-04 Russells-iMac install_monitor[777]: Temporarily excluding: /Applications, /Library, /System, /bin, /private, /sbin, /usr
2018-04-26 08:45:47-04 Russells-iMac install_monitor[777]: PackageKit: Locking applications
2018-04-26 08:45:47-04 Russells-iMac installd[763]: ./preinstall: AdSSOPackageInstaller: Install path is '/Library/Application Support/Autodesk/AdSSO'
2018-04-26 08:45:47-04 Russells-iMac installd[763]: PackageKit: Using trashcan path /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/PKInstallSandboxTrash/62CE246C-FC49-477C-A627-E437C37A241A.sandboxTrash for sandbox /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/C/PKInstallSandboxManager/62CE246C-FC49-477C-A627-E437C37A241A.activeSandbox
2018-04-26 08:45:47-04 Russells-iMac installd[763]: PackageKit: Shoving /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/C/PKInstallSandboxManager/62CE246C-FC49-477C-A627-E437C37A241A.activeSandbox/Root (2 items) to /
2018-04-26 08:45:47-04 Russells-iMac installd[763]: PackageKit: Executing script "./postinstall" in /private/tmp/PKInstallSandbox.N8xWeb/Scripts/com.autodesk.autocad2018.O048.M.478.update.NGkKfn
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: starting ......
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: The files is in /tmp/_adsk_22.0.48.478/autocad2018.O048.M.478
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: moving the old data to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/App Store.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/App Store.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/Automator.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/Automator.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/Calculator.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/Calculator.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/Calendar.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/Calendar.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/Chess.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/Chess.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/Contacts.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/Contacts.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/DVD Player.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/DVD Player.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/Dashboard.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/Dashboard.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/Dictionary.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/Dictionary.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/FaceTime.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/FaceTime.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/Font Book.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/Font Book.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/Image Capture.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/Image Capture.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/Launchpad.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/Launchpad.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/Mail.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/Mail.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/Maps.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/Maps.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/Messages.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/Messages.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/Mission Control.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/Mission Control.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/Notes.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/Notes.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/Photo Booth.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/Photo Booth.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/Photos.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/Photos.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/Preview.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/Preview.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/QuickTime Player.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/QuickTime Player.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/Reminders.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/Reminders.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/Safari.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/Safari.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/Siri.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/Siri.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/Stickies.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/Stickies.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/System Preferences.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/System Preferences.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/TextEdit.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/TextEdit.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/Time Machine.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/Time Machine.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/Utilities to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/Utilities: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/iBooks.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/iBooks.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: mv: rename /Applications/iTunes.app to /var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/tempolddata.GS1t74QQ/iTunes.app: Operation not permitted
2018-04-26 08:45:48-04 Russells-iMac installd[763]: ./postinstall: Can't move the old data!
2018-04-26 08:46:31-04 Russells-iMac install_monitor[777]: Re-included: /Applications, /Library, /System, /bin, /private, /sbin, /usr
2018-04-26 08:46:31-04 Russells-iMac install_monitor[777]: PackageKit: Unlocking applications
2018-04-26 08:46:31-04 Russells-iMac install_monitor[777]: PackageKit: Error unlocking app: The file “AutoCAD 2018.app” doesn’t exist.
2018-04-26 08:46:31-04 Russells-iMac install_monitor[777]: PackageKit: Error unlocking app: The file “AutoCAD 2018.app” doesn’t exist.
2018-04-26 08:46:32-04 Russells-iMac installd[763]: PackageKit: releasing backupd
2018-04-26 08:46:32-04 Russells-iMac installd[763]: PackageKit: allow user idle system sleep
2018-04-26 08:46:32-04 Russells-iMac installd[763]: PackageKit: Install Failed: Error Domain=PKInstallErrorDomain Code=112 "An error occurred while running scripts from the package “AutoCAD_Mac_2018.1_Update_Combo.pkg”." UserInfo={NSFilePath=./postinstall, NSURL=file://localhost/Volumes/O048.M.478.acad.mac.x64.comboupdate/AutoCAD_Mac_2018.1_Update_Combo.pkg#autocad2018.pkg, PKInstallPackageIdentifier=com.autodesk.autocad2018.O048.M.478.update, NSLocalizedDescription=An error occurred while running scripts from the package “AutoCAD_Mac_2018.1_Update_Combo.pkg”.} {
NSFilePath = "./postinstall";
NSLocalizedDescription = "An error occurred while running scripts from the package \U201cAutoCAD_Mac_2018.1_Update_Combo.pkg\U201d.";
NSURL = "file://localhost/Volumes/O048.M.478.acad.mac.x64.comboupdate/AutoCAD_Mac_2018.1_Update_Combo.pkg#autocad2018.pkg";
PKInstallPackageIdentifier = "com.autodesk.autocad2018.O048.M.478.update";
}
2018-04-26 08:46:32-04 Russells-iMac installd[763]: PackageKit: Running idle tasks
2018-04-26 08:46:32-04 Russells-iMac Installer[748]: install:didFailWithError:Error Domain=PKInstallErrorDomain Code=112 "An error occurred while running scripts from the package “AutoCAD_Mac_2018.1_Update_Combo.pkg”." UserInfo={NSFilePath=./postinstall, NSURL=file://localhost/Volumes/O048.M.478.acad.mac.x64.comboupdate/AutoCAD_Mac_2018.1_Update_Combo.pkg#autocad2018.pkg, PKInstallPackageIdentifier=com.autodesk.autocad2018.O048.M.478.update, NSLocalizedDescription=An error occurred while running scripts from the package “AutoCAD_Mac_2018.1_Update_Combo.pkg”.}
2018-04-26 08:46:32-04 Russells-iMac installd[763]: PackageKit: Removing client PKInstallDaemonClient pid=748, uid=501 (/System/Library/CoreServices/Installer.app/Contents/MacOS/Installer)
2018-04-26 08:46:32-04 Russells-iMac installd[763]: PackageKit: Done with sandbox removals
2018-04-26 08:46:32-04 Russells-iMac Installer[748]: Install failed: The Installer encountered an error that caused the installation to fail. Contact the software manufacturer for assistance.
2018-04-26 08:46:32-04 Russells-iMac Installer[748]: IFDInstallController 106E0 state = 8
2018-04-26 08:46:32-04 Russells-iMac Installer[748]: Displaying 'Install Failed' UI.