I installed rooster after the installaton doc but after the installation text apears that i must configure roster and that i shoul delete install and upgrade files and install folder. I did delete it but now when i try to configure roster (like guildinfo) nothing happens just a reload of the admin panel.
What must i do to fix it.

Anrima wrote:..I did delete it but ...

Delete :
install (the directory)
upgrade.php (the file)

Both are in the root roster directory.
Don't delete anything else - if any doubt, re-up all files in root excepts those two ones and config.php.

In your browser, a famous Ctrl-F5 can do magic things as well

PS : The first time, I deleted the update.php file instead of ..... - I just cried in a corner for a while.... things went better afterwards when I started to read a bit