electricsugar, I think you're using a Windows server so I don't know; however, the permissions need to be:
user(read,write,execute)
group(read,execute)
world(read,execute)
Which in Linux has the numeric value of 755.
For those using a Linux server, if your host provides cPanel (the control panel, dashboard, you see when you log-in) then,
- using the legacy file manager, left-click the directory then look at the top right of the page where it says "Change Permissions", left click the change permissions button then use the checkboxes to set the permissions as described above; and,
- using the new file manager, either left-click to select the directory then use the top menu to select "Change Permissions" or right-click the directory then use the pop-up menu to select change permissions then use the checkboxes to set the permissions as described above.
If changing directory permissions doesn't work then you might need to switch-off php safe mode by editing php.ini. Your host can help with this.