I'm having strange issues trying to install a package I've created when a different version of the application already exists in /Applications The installer throws an error about the postinstall script failing, seemingly because the last thing that script tries to do is call "open /Applications/App Name.app" which appears to be failing because the application is mistakenly being installed to "/Applications/App Name.localized/App Name.app" I can't figure out why this is happening during the installation and a follow-up attempt to install the same package succeeds because that time the application properly gets installed to "/Applications/App Name.app" Here are some background & details: In previous releases of this app, there were some issues I believe were related to relocation so since then the I added a preinstall script to the installation package that first checks for the existence of "/Applications/App Name.app" & removes it should it be found Here is how the package is being built: #!/bin/bash IDENTITY_NAME_APPLICATION="Developer ID Application: COMPANY NAME LLC" IDENTITY_NAME_INSTALLER="Developer ID Installer: COMPANY NAME LLC" TMPDIR="./tmp" RAWAPP="App Name.app" APP_PLIST="./plist/com.corp.appname.plist" PKGNAME="App_Name.pkg" echo "Setup tmp directory: ${TMPDIR}" rm -rf ${TMPDIR} mkdir -p ${TMPDIR}/root/Applications mkdir -p ${TMPDIR}/root/Library/LaunchDaemons if [ ! -d "./Raw App/${RAWAPP}" ]; then echo "ERROR: could not find ./Raw App/${RAWAPP}" exit 1 fi cp -r "./Raw App/${RAWAPP}" ${TMPDIR}/root/Applications cp -r "${APP_PLIST}" ${TMPDIR}/root/Library/LaunchDaemons echo "Codesigning the app bundle" codesign \ --options runtime \ --timestamp --deep \ -s "$IDENTITY_NAME_APPLICATION" \ "${TMPDIR}/root/Applications/${RAWAPP}" echo "Creating a codesigned installer" pkgbuild \ --sign "$IDENTITY_NAME_INSTALLER" \ --root "${TMPDIR}/root" \ --component-plist "./plist/appname_component.plist" \ --scripts ./scripts \ ${TMPDIR}/AppNameComponent.pkg productbuild \ --sign "$IDENTITY_NAME_INSTALLER" \ --package ${TMPDIR}/AppNameComponent.pkg \ ${TMPDIR}/${PKGNAME} echo "Clean up" rm -r ${TMPDIR}/root ${TMPDIR}/AppNameComponent.pkg echo "Final codesigned pkg: ${TMPDIR}/${PKGNAME}"