If you're having this problem, here's the fix:
1. Open Avast
2. Click on 'Settings' (upper right corner of page)
3. Click on 'Troubleshooting'
4. Click on 'Redirect Settings'
5. Clear all the port #'s from each field
6. Check 'Ignore Local Communication'
7. Click 'OK'
8. Close Avast
Wouldn't it be nice if all of life's problems were that easy to solve?