Unable to upload themes or plugins on multisite

Hi,

Thank you for helping me get my mutlisite up.
I have few issues with ontheredbox.com (I have granted access so you can go in and look at the problems) (and fix them. :slight_smile:

1. I created a new page called courses, but i am unable to view it.
2. I get an error message when trying to upload your themes and plugins.

I was able to upload WPMU DEV but that is it.

Can you help?
jacob