Mac Software Cannot Be Opened

To get more information about the problem, open the Console utility and report any messages that appear as you try to open files. Also, open the Terminal utility, enter the command 'spctl -assess -vv ' (including the space at the end, but not the quotes around it), then drag a downloaded file from the Finder into the Terminal window (this'll paste in the file's path), then reselect the. First of all, open up a Terminal window by going to Finder Go Utilities. Mac Finder; From there, locate and open up a Terminal. Once the terminal window is up, use the following command to run the application: sudo xattr -cr /path/to/application.app Running App from Terminal. If your Mac is set to allow apps from the App Store and identified developers, and you try to install an app that isn’t signed by an identified developer and—in macOS Catalina and later—notarized by Apple, you also see a warning that the app cannot be opened.

Do a reinstall, clean install, of Mountain Lion to its own drive - leaving the one you have as is. Would be nice to have cloned 10.6.8 to another drive for backup and safety, and in case you need to dual boot until you get everything updated if necessary to be ML compatible.

SU is Apple.

You have a Mac Pro 65 lb tower? so you would have 4 drive bays inside to work with backups and dual booting.

Mac Software Cannot Be Opened Because It Is From An Unidentified Developer

Upgrading the OS over the older does cause issues, especially due to change in code and drivers and dropping support for PowerPC based and drivers that were not 64-bit.

http://www.macupdate.com/app/mac/7032/carbon-copy-cloner

Create an OS X Lion Install disc

How to clone your system:

May 8, 2013 11:12 AM