- Make sure your firewall is disabled to allow SmartDownloader to run correctly.
- Try to right click download and run as administrator.
On Mac OS X:
- Make sure Gatekeeper is disabled using the steps below:
- Go to System Preferences -> Security and Privacy -> General
- Click the lock icon to allow changes to settings.
- Select “Anywhere” from “Allow applications downloaded from:”
You can then reset the Gatekeeper software by following the steps again and choosing the other option in step 3.