To install the Shack Error Notify extension on your Joomla site, please use Joomla's core extensions installer.
- In your Joomla control panel, go to Extensions > Manage:
- You will see the Extensions: Install administrative page.
- Under the Upload Package File tab, click the Or browse for file green button:
- In the "Open File" box, find the JoomlaShack extension you need to install.
- Click on the file name twice.
- You should see successful installation messages on a light green background: