I have uploaded and completed the installation process, but when i click on the configure roster button i get the background and nothing else. A single message asking me to remove the install files is the only thing that shows. can any one help with this problem?

I think it's obvious

Do what the message says

I have sry i should have stated that, files were removed. shouldnt there be something more on the screen at any rate?

Make absolutely sure these are removed
install.php
upgrade.php
and the folder install/