You might try posting on the Installation and Troubleshooting forum with the computer type (Windows, Mac, or Linux), the OS version, and the Arduino board type. I use Linux so I am not much help on Windows or Mac installation problems.
You might try posting on the Installation and Troubleshooting forum with the computer type (Windows, Mac, or Linux), the OS version, and the Arduino board type. I use Linux so I am not much help on Windows or Mac installation problems.