It looks like you might have been trying to create this page as a subpage of the main UBC Twitter Accounts page. Just as an fyi, the Main Space, or root, of the wiki does not support subpages (the course and documentation spaces do). The primary reason for this is that the main space is a shared, community area where each page should be understandable within its own context.
Please let me know if I can provide further info or answer any questions.
Thanks, Will. Yes, that was exactly what I was trying to do. Thanks for the clarification! I'll rethink the approach for what I need to do. Cheers, Adrian