[pooyan]

Would you like to Upgrade, Reinstall or Change directory [U/r/c]? U

[ERROR] Sorry, installation will abort without a valid license key.

For evaluation purpose, please obtain a trial license key from our web
site http://www.litespeedtech.com, copy it to this directory
and run Installer again.

If a production license has been purchased, please copy the serial number
from your confirmation email to this directory and run Installer again.

NOTE:
Please remember to set ftp to BINARY mode when you ftp trial.key from
another machine.