Everything seems to go fine and I get the message at the end, remember to configure roster.
I click configure and get the standard admin menu. Everything looks fine.
But, as soon as I try to update any of the settings, and submit them all the buttons in my roster install go blank

See screenshot here...
http://www.morrisson.co.uk/roster.jpg
From then on the buttons are like this on every page whatever I do.
Anyone have this before, or know how to fix it?
Thanks,
Loz.