I run three WP multisites, each identical (but each used for different purposes) and running on the same version 3.3.1.
One of them seems to have everything working correctly -- when I go to 'Add New User', I can select the role type in the drop-down menu. However, in the other two sites, the role menu appears, but with no options. I cannot select the role type because there are no roles to select. Why is this happening and how do I fix it so role types appear again?
Another problem (minor), is in the top toolbar under 'My Sites', there should be 'Network Admin' and then after that, a listing of the multisites. In the same two sites that have the problem above, there is no such listing forcing me to go to the Network Admin sites every time in order to find the dashboard of the site I want to switch to. How do I fix it so the listing appears in this menu?